for

for

英[fɔː(r) , fə(r)]美[fɔːr , fər]

prep.为，为了，关于，当作；

conj.因为，由于；

英语六级真题

Writing in the journal, the scientists describe how the storks from Germany were clearly affected by the presence of waste sites, with four out of six birds that survived for at least five months overwintering on rubbish dumps in northern Morocco, instead of migrating to the Sahel.

Working-class parents, meanwhile, believe their children will naturally thrive, and give them far greater independence and time for free play.

Winners of local contests will participate in the national math competition for free.

Unless renewables become cheap enough that substantial carbon deposits are left underground for a very long time, if not forever, the planet will likely be exposed to potentially catastrophic climate risks.

Unfortunately, the current low prices for oil, gas, and coal may provide little incentive for research to find even cheaper substitutes for those fuels.

Travel was arduous and costly throughout the period, possible only for a privileged class—the same that produced gentlemen scientists, authors, antique experts, and patrons of the arts.

Thus was born the idea of the Grand Tour, a practice which introduced Englishmen, Germans, Scandinavians, and also Americans to the art and culture of France and Italy for the next 300 years.

This prompted the company to cut its forecasts for the full fourth quarter.

They were the pioneers of gender equity, in their useful, adaptable clothing, which was both made for the masses and capable of self-expression.

They have forced white storks to search for safer winter shelters.

They call for increased investments.

They are more likely to grow up in neighborhoods that their parents say aren't great for raising children, and their parents worry about them getting shot, beaten up or in trouble with the law.

These math circles cost nothing, or they're very cheap for students to get involved in, but you have to know about them, said Rusczyk.

These likely persistent forces, like the growth of shale ( ' , 页岩) oil, point to a low for long scenario.

These designers established the modem dress code, letting playsuits and other activewear outfits suffice for casual clothing, allowing pants to enter the wardrobe, and prizing rationalism and versatility in dress, in contradiction to dressing for an occasion or allotment of the day.

The summer after 7th grade, students spend three weeks on a college campus studying advanced math for seven hours a day.

The same is true for new technologies for alleviating fossil fuel emissions.

The football team, the basketball team—that's our competition for resources, student time, attention, school dollars, parent efforts, school enthusiasm.

The ever-growing demand for big data.

The cycle continues: Poorer parents have less time and fewer resources to invest in their children, which can leave children less prepared for school and work, which leads to lower earnings.

The challenge is if certain types of people are doing something, it's difficult for other people to break into it, said Po-Shen Loh, the head coach of last year's winning U.S.Math Olympiad team.

The Math Olympiad Summer Training Program is a three-week math camp held by the Mathematical Association of America that leads straight to the international championship and is free for those who make it.

The British traveler Charles Thompson spoke for many Grand Tourists when in 1744 he described himself as being impatiently desirous of viewing a country so famous in history, a country which once gave laws to the world, and which is at present the greatest school of music and painting, contains the noblest productions of sculpture and architecture, and is filled with cabinets of rarities, and collections of all kinds of historical relics.

Students in university towns may also have access to another lever for involvement in accelerated math: math circles.

Students attend after-school clubs, summer camps, online forums and classes and university-based math circles, to prepare for the competitions.

Some communities have agreed to share online—geneticists, for example, post DNA sequences at the GenBank repository ( ' , 库), and astronomers are accustomed to accessing images of galaxies and stars from, say, the Sloan Digital Sky Survey, a telescope that has observed some 500 million objects—but these remain the exception, not the rule.

Since there were few museums anywhere in Europe before the close of the eighteenth century, Grand Tourists often saw paintings and sculptures by gaining admission to private collections, and many were eager to acquire examples of Greco-Roman and Italian art for their own collections.

Schools or teachers who sign up for the National Math Club receive a kit full of activities and resources, but there's no special teacher training and no competition attached.

Renewables account for only a small share of global primary energy consumption, which is still dominated by fossil fuels—30% each for coal and oil, 25% for natural gas.

Progress in the development of renewables could be fragile, however, if fossil fuel prices remain low for long.

One relative bright spot for Macy's during the holiday season was the online channel, where it rang up double-digit increases in sales and a 25% increase in the number of orders it filled.

One of the largest feeders for high school math competitions—including those that eventually lead to the IMO—is a middle school program called MathCounts.

Oil prices are expected to remain lower for longer.

Nations from around the world have gathered in Paris for the United Nations Climate Change Conference, COP 21, with the goal of a universal and potentially legally-binding agreement on reducing greenhouse gas emissions.

Most of the training for advanced-math competitions happens outside the confines of the normal school day.

Most Grand Tourists, however, stayed for briefer periods and set out with less scholarly intentions, accompanied by a teacher or guardian, and expected to return home with souvenirs of their travels as well as an understanding of art and architecture formed by exposure to great masterpieces.

Morgan's comments on outsourcing mark the second time this month that he has come out against one of Haslam's plans for higher education in Tennessee.

Morgan said last week that he would retire at the end of January because of the governor's proposal to split off six universities of the Board of Regents system and create separate governing boards for each of them.

Meanwhile, growing income inequality has coincided with the increasing importance of a college degree for earning a middle-class wage.

Macy's has been moving aggressively to try to remake itself for a new era of shopping.

London was a frequent starting point for Grand Tourists, and Paris a compulsory destination; many traveled to the Netherlands, some to Switzerland and Germany, and a very few adventurers to Spain, Greece, or Turkey.

It was unaffordable for ordinary people.

It is urgent for governments to increase the cost of using fossil fuels to an appropriate level to lessen the catastrophic effects of climate change.

Interestingly, parents' attitudes toward education do not seem to reflect their own educational background as much as a belief in the importance of education for upward mobility.

Interest in elite high school math competitions has grown in recent years, and in light of last summer's U.S. win at the International Math Olympiad ( ' , IMO)—the first for an American team in more than two decades— the trend is likely to continue.

In these groups, which came out of an Eastern European tradition of developing young talent, professors teach promising K-12 students advanced mathematics for several hours after school or on weekends.

In the Pew survey, middle-class families earning between $30,000 and $75,000 a year fell right between working-class and high-earning parents on issues like the quality of their neighborhood for raising children, participation in extracurricular activities and involvement in their children's education.

Historically, scientists have objected to sharing for many reasons: it is a lot of work; until recently, good databases did not exist; grant funders were not pushing for sharing; it has been difficult to agree on standards for formatting data; and there is no agreed way to assign credit for data.

Higher fossil fuel prices prove to be conducive to innovation and application of cleaner technologyIf fossil fuel prices remain low for a long time, it may lead to higher emissions of greenhouse gases.

High-earning parents are much more likely to say they live in a good neighborhood for raising children.

Greenhouse gas emissions, if not properly dealt with, will pose endless risks for mankind.

Funding agencies note that data paid for with public money should be public information, and the scientific community is recognizing that data can now be shared digitally in ways that were not possible before.

Fossil fuel prices are likely to stay low for long.

For the birds, it's a very convenient way to get food.

For example, the United Nations Children's Fund estimates that some 11 million children in Africa face hunger, disease, and water shortages as a result of the strongest El Ni o ( ' , 厄尔尼诺) weather phenomenon in decades.

For example, the United Arab Emirates has endorsed an ambitious target to draw 24% of its primary energy consumption from renewable sources by 2021.

For example, one of the most popular data sets on multidisciplinary repository Dryad is about wood density around the world; it has been downloaded 5,700 times.

Economic reasoning shows that the least expensive way for each country is to put a price on carbon emissions.

Early childhood experiences can be very consequential for children's long-term social, emotional and cognitive development, said Sean Reardon, professor of poverty and inequality in education at Stanford University.

Do all parents want the most success for their children? Absolutely, she said.

Direct subsidies to research and development have been adopted by some governments but are a poor substitute for a carbon price: they do only part of the job, leaving in place market incentives to over-use fossil fuels and thereby add to the stock of atmospheric greenhouse gases without regard to the collateral ( ' , 附带的) costs.

Coal and natural gas are mainly used for electricity generation, whereas oil is used mostly to power transportation, yet the prices of all these energy sources are linked.

Co-author Amy Zanne thinks that users probably range from climate-change researchers wanting to estimate how much carbon is stored in biomass, to foresters looking for information on different grades of timber.

By raising relative demand for clean energy sources, a carbon price would also help align the market return to clean-energy innovation with its social return, spurring the refinement of existing technologies and the development of new ones.

Beginning in the late sixteenth century, it became fashionable for young aristocrats to visit Paris, Venice, Florence, and above all, Rome, as the culmination ( ' , 终极) of their classical education.

Another influential feeder for advanced-math students is an online school called Art of Problem Solving, which began about 13 years ago and now has 15,000 users.

And it would raise the demand for technologies such as carbon capture and storage, spurring their further development.

American parents want similar things for their children, the Pew report and past research have found: for them to be healthy and happy, honest and ethical, caring and compassionate.

After the high-pressure Countdown round at this year's national MathCounts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math Video Challenge took the stage to show their videos.

According to Mark Saul, the director of competitions for the Mathematical Association of America, not a single African-American or Hispanic student—and only a handful of girls—has ever made it to the Math Olympiad team in its 50 years of existence.

A search for balance between tradition and novelty.

A number of factors are driving down the global oil prices not just for now but in the foreseeable future.

A commonly held view in the oil industry is that the best cure for low oil prices is low oil prices.

2% in November and December at stores open more than a year, a disappointing holiday season performance that capped a difficult year for a department store chain facing wideranging challenges.

In the past, health experts warned us that the day would come in which it would become very difficult to provide medical care for even common problems such as lung infection or severe sour throat.

For years, many of us have relied on antibiotic use to treat various infections.

For the next few years, you have a chance to focus on thinking.

And the reality is that antibiotics have been responsible for saving millions of lives since penicillin, one of the earliest antibiotics, was first used on a clinical basis 70 years ago.

While the practice carries serious health risks for many, those dangers are outweighed by the social and economic gains for poor urban farmers and consumers who need affordable food.

When this water is used for agricultural irrigation, farmers risk absorbing disease-causing bacteria, as do consumers who eat the produce raw and unwashed.

When the health insurance industry was still cooperating in reform efforts, its trade group offered to provide standardized forms for automated processing.

We need to accept that fact across much of the planet, so waste with little or no treatment will be used in agriculture for good reason.

We have everything to gain by encouraging them to explore the world beyond their immediate experience and to prepare themselves for their turn at shaping that world.

We are very proud of our accomplishments under the Greenlist system and we believe that we will prevail in these cases, Christopher Beard, director of public affairs for SC Johnson, said, while acknowledging that this has been an area that is difficult to navigate.

Virtually all experts agree that the fee-for-service system—doctors are rewarded for the quantity of care rather than its quality of effectiveness—is a primary reason that the cost of care is so high.

Unilever recently ran an interactive campaign for its Axe deodorant ( ' , 除臭剂), which kept viewers engaged for more than three minutes on average.

Unfortunately, the union in Chicago is insisting that teachers who are laid off—often for being ineffective— should get priority in new hiring.

To show the urgent need for the government to take action.

To alert American workers to the urgency for adaptation.

They seem to be turning inward—generally in a pro-social manner, certainly with positive benefits for intimate relationships, but too often at the expense of a connection with the present and future world beyond, including the society they will one day inherit.

They include such measures as accountable care organizations to take charge of a patient's needs with an eye on both cost and quality, and chronic disease management to make sure the seriously ill, who are responsible for the bulk of all health care costs, are treated properly.

There were no longer enough fish in the sea for the stock to maintain itself, let alone an industry.

There is a large potential for wastewater agriculture to both help and hurt great numbers of urban consumers, said Liqa Raschid-Sally, who led the study.

The survey shows us that today's teens are affectionate, sensible and far happier than the angry and tortured souls that have been painted for us by stereotypes.

The study found that strong teachers in the fourth through eighth grades raised the skills of their students in ways that would last for decades.

The elevation of the room that once belonged only to the servants to that of design showcase for the modem family tells the story of a century of social change.

The changes would have to be approved or rejected as a whole by Congress, making it hard for narrow-interest lobbies to bend lawmakers to their will.

The average budget for a major kitchen overhaul in 2006, calculates Remodeling magazine, was a staggering $54,000; even a minor improvement cost on average $18,000.

The answer is that no one has an easy fix for rising medical costs.

The Senate Finance bill would impose an excise tax ( ' , 消费税) on health insurance plans that cost more than $8,000 for an individual or $21,000 for a family.

柯林斯高阶英汉双解学习词典释义

PREP

(表示对象)为了，给，对于

If something is for someone, they are intended to have it or benefit from it.

例句

PREP

受雇于

If you work or do a job for someone, you are employed by them.

例句

PREP

代表(群体或组织)

If you speak or act for a particular group or organization, you represent them.

例句

PREP

帮助;为了

If someone does something for you, they do it so that you do not have to do it.

例句

PREP

替…(感到);为…(感到)

If you feel a particular emotion for someone, you feel it on their behalf.

例句

PREP

(表示情感的对象)对

If you feel a particular emotion for someone or something, they are the object of that emotion, and you feel it when you think about them.

例句

PREP

供…之用;为…所需

You use for after words such as 'time', 'space', 'money', or 'energy' when you say how much there is or whether there is enough of it in order to be able to do or use a particular thing.

例句

PREP

供(销售、租用等)

If something is for sale, hire, or use, it is available to be sold, hired, or used.

例句

PREP

(表示用途或目的)为了，用来

You use for when you state or explain the purpose of an object, action, or activity.

例句

PREP

(置于名词后)因为，由于

You use for after nouns expressing reason or cause.

例句

CONJ-SUBORD

(引导从句)因为，为了

You can use for to introduce a clause which gives the reason why you made the statement in the main clause.

例句

PREP

因为;以…为原因

You can use for to introduce the cause of the fact that you have just mentioned.

例句

PREP

(用于条件句中)如果不是为了，要不是

For is used in conditional sentences, in expressions such as 'if not for' and 'were it not for', to introduce the only thing which prevents the main part of the sentence from being true.

例句

PREP

(表示时间)持续

You use for to say how long something lasts or continues.

例句

PREP

(表示距离)延伸

You use for to say how far something extends.

例句

PREP

花费;以…的价钱

If something is bought, sold, or done for a particular amount of money, that amount of money is its price.

例句

PREP

在(指定的时间)

If something is planned for a particular time, it is planned to happen then.

例句

PREP

在，为了(某个场合)

If you do something for a particular occasion, you do it on that occasion or to celebrate that occasion.

例句

PREP

去;前往

If you leave for a particular place or if you take a bus, train, plane, or boat for a place, you are going there.

例句

PREP

对…来说

You use for when you make a statement about something in order to say how it affects or relates to someone, or what their attitude to it is.

例句

PREP

(用于形容词、名词和动词短语后，引出其后动词不定式的主语)

After some adjective, noun, and verb phrases, you use for to introduce the subject of the action indicated by the following infinitive verb.

例句

PREP

就…而言(表示相对来说不寻常)

You use for when you say that an aspect of something or someone is surprising in relation to other aspects of them.

例句

PREP

愿意做;打算从事;想要

If you say that you are for a particular activity, you mean that this is what you want or intend to do.

例句

PREP

为…喜欢;对…适合

If you say that something is not for you, you mean that you do not enjoy it or that it is not suitable for you.

例句

PREP

(表示负有责任或享有权利)由…

If it is for you to do something, it is your responsibility or right to do it.

例句

PREP

支持;同意

If you are for something, you agree with it or support it.

例句

PREP

(用于 argue, case, evidence, vote 等词后，引出所支持或被证明之事)

You use for after words such as 'argue', 'case', 'evidence', or 'vote' in order to introduce the thing that is being supported or proved.

例句

PREP

(置于某些名词、形容词或动词后，引出更多信息或与某性质、事物或行为相关的事物)

For is the preposition that is used after some nouns, adjectives, or verbs in order to introduce more information or to indicate what a quality, thing, or action relates to.

例句

PREP

以…命名

To be named for someone means to be given the same name as them.

例句

PREP

(与 every 连用，引出比率)每…(就有…)

You use for with 'every' when you are stating a ratio, to introduce one of the things in the ratio.

例句

PREP

(用于比较)每镑对每镑/每英里对每英里

You can use for in expressions such as pound for pound or mile for mile when you are making comparisons between the values or qualities of different things.

例句

PREP

(意思)相当于，等于

If a word or expression has the same meaning as another word or expression, you can say that the first one is another word or expression for the second one.

例句

PREP

(引出可在其他地方找到的信息)至于，对于

You use for in a piece of writing when you mention information which will be found somewhere else.

例句

PHRASE

(尽管有不同意见或实际困难)完全赞成,坚信

If you say that you are all for doing something, you agree or strongly believe that it should be done, but you are also often suggesting that other people disagree with you or that there are practical difficulties.

例句

PHRASE

会惹麻烦;要闯祸

If you are in for it or, in British English, if you are for it, you are likely to get into trouble because of something you have done.

PHRASE

首次/*后一次

You use expressions such as for the first time and for the last time when you are talking about how often something has happened before.

例句

英汉词典释义

prep.

(表示时间)在(某一特定时间); 在…时节; 持续达

(表示方向)向, 朝, 开往

(表示对象) 替, 帮, 给, 为…做准备, 对, 对于, 对…来说, 在…一方

(表示原因)因为, 由于, 作为…的结果

(表示距离)延续达, 计有

(表示结果)当做, 作为, 作为…的部分, 就…的条件而言

(表示目的)为了…, 适用于

(表示态度)支持, 赞同, 想要

(表示比率)按…比例, 以…价格, 第…次

（表示对象、用途等）给，对，供

关于

代表

受雇于

支持；拥护

为得到；为获取

换取

就…而言

对（某人）来说（困难、必需、愉快等）

conj.

因为, 由于