span

span怎么读

英式音标：[spæn]

美式音标：[spæn]

span基本解释

n. 跨度，跨距；范围

vt. 跨越；持续；以手指测量

n. (Span)人名；(捷)斯潘

span的意思释义

n.

共轭（马、骡）；跨度，墩距；一段时间；[航] 跨绳

vt.

缚住或扎牢；跨越时间或空间；以掌测量；以手围绕测量类似测量

变形

复数：spans过去式：spanned过去分词：spanned现在分词：spanning第三人称单数：spans

双语释义

n.(名词)

[C] 跨度,跨径 distance or part between the supports of an arch or a bridge

[C] 两个界限间的距离 a stretch between two thing, especially in time; period

[C] 一段时间 a length of time over which the stated thing continues or works well

英英释义

span[ /spæn/ ]

n.

the complete duration of something

\"the job was finished in the span of an hour\"

the distance or interval between two points

two items of the same kind

同义词：couplepairtwosometwainbraceyokecoupletdistichduoduetdyadduad

a unit of length based on the width of the expanded human hand (usually taken as 9 inches)

a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.

同义词：bridge

the act of sitting or standing astride

同义词：straddle

v.to cover or extend over an area or time period

\"The parking lot spans 3 acres\"; \"The novel spans three centuries\"

同义词：crosstraversesweep

span用法及例句

词汇搭配

用作名词 (n.)

动词+～

have a span of有…长〔宽〕

lengthen〔shorten〕 the span延长〔缩短〕时间

widen the span of knowledge扩大知识面

形容词+～

brief〔short〕 span短暂的时间

whole span全长

名词+～

attention span注意力持续集中的时间

life span寿命

memory span记忆持续时间

介词+～

measure by spans用指距来量

in a span在一段时间中

100 feet in span跨距一百英尺

bridge of three spans三孔桥

over a span of在…之中

～+介词

span of a bridge桥的跨度

span of knowledge知识面

span of life寿命

span of memory记忆的广度

span of ten years十年的时间

词组短语

life span寿命；使用期限

long span长跨度

time span时间跨度

span length跨度距离；杆间距离

attention span注意广度；注意力的持续时间

long span bridge长跨桥；大跨径桥

single span单跨；单孔

bridge span桥跨

spick and span崭新的，极干净的

memory span记忆广度；存储器容量

digit span数字广度

clear span净跨；净孔；净翼展

wing span翼展；翼层

同近义词辨析

territory, scope, range, span

territory领土（的范围）

scope（处理、研究事物的）范围

range（种类或变化的）限度，范围，幅度，程度；视力或听力所达到的距离，声音所能传送的距离；（*、炮、导弹等的）射程

span跨度，跨径；（某事物）自始至终的持续时间或期间

双语例句

用作名词(n.)

Modern medicine has increased man\'s life span.

现代医学延长了人的寿命。

He has settled here for a long span of time.

他已经在这儿定居很长一段时间了。

The arch has a span of 60 meters.

拱门的跨度为60米。

The spider has a leg span of 3 inches.

这个蜘蛛的腿的长度为3英寸。

The clear span of a bridge is the gap from the near edge of the next.

桥梁的净跨，是自一个桥墩的近侧边到相邻桥墩近侧边之间的间距。

用作及物动词(vt.)

The shipwrecks span nearly a century.

这些船只残骸已有近百年历史。

Little bridges span the canals.

小型的桥梁横跨在运河之上。

The gloom spans the whole novel.

阴郁的气氛贯穿着整部小说。

His knowledge spans many different areas.

他的知识遍及许多领域。

Imagination will span the gaps in our knowledge.

想像力会弥补我们知识的不足。

例句参考

Extension of Life-Span by Introduction of Telomerase into Normal Human Cells

Span: An energy-efficient coordination algorithm ...

Span: An energy-efficient coordination algorithm for topology maintenance in Ad Hoc wireless networks

HIV-1 dynamics in vivo: virion clearance rate, infected cell life-span, and viral generation time.

A life-span, life-space approach to career development

Discounting of delayed rewards: A life-span comparison.

Autophagy genes are essential for dauer development and life-span extension in C. elegans.

Leaf Life-Span in Relation to Leaf, Plant, and Stand Characteristics among Diverse Ecosystems

DAF-16 Target Genes That Control C. elegans Life-Span and Metabolism

A life-span theory of control

span词源

span

span: [OE] Span is of Germanic origin, with relatives in German and Dutch spanne, Swedish spann, and Danish spand. It originated in the notion of the distance between the tip of the thumb and the tip of the little finger. The verb span was derived in the 14th century from the noun. Its German relative spannen ‘stretch, tighten’ produced the derived noun spanner, which was borrowed by English in the 17th century.=> spanner

span (n.1)

\"distance between two objects,\" from Old English span \"distance between the thumb and little finger of an extended hand\" (as a measure of length, roughly nine inches), probably related to Middle Dutch spannen \"to join, fasten\" (see span (v.)).The Germanic word was borrowed into Medieval Latin as spannus, hence Italian spanna, Old French espan \"hand\'s width, span as a unit of measure,\" French empan. As a measure of volume (early 14c.), \"what can be held in two cupped hands.\" Meaning \"length of time\" first attested 1590s; that of \"space between abutments of an arch, etc.\" is from 1725. Meaning \"maximum lateral dimension of an aircraft\" is first recorded 1909.

span (v.)

Old English spannan \"to join, link, clasp, fasten, bind, connect; stretch, span,\" from Proto-Germanic *spannan (cognates: Old Norse spenna, Old Frisian spanna, Middle Dutch spannen, Dutch spannan \"stretch, bend, hoist, hitch,\" Old High German spannan, German spannen \"to join, fasten, extend, connect\"), from PIE root *(s)pen- \"to draw, stretch, spin\" (cognates: Latin pendere \"to hang, to cause to hang,\" pondus \"weight\" (perhaps the notion is the weight of a thing measured by how much it stretches a cord), pensare \"to weigh, consider;\" Greek ponos \"toil,\" ponein \"to toil;\" Lithuanian spendziu \"lay a snare;\" Old Church Slavonic peti \"stretch, strain,\" pato \"fetter,\" pina \"I span;\" Old English spinnan \"to spin;\" for other cognates, see spin (v.)).The meaning \"to encircle with the hand(s)\" is from 1781; in the sense of \"to form an arch over (something)\" it is first recorded 1630s. Related: Spanned; spanning.

span (n.2)

\"two animals driven together,\" 1769, American English, from Dutch span, from spannen \"to stretch or yoke,\" from Middle Dutch spannan, cognate with Old English spannan \"to join\" (see span (v.)). Also used in South African English.

span相关例句

1.emolsifier span

乳化剂斯盘

2.Thanks to CNN, C/SPAN and the nightly news, many lawmakers have almost become celebrities in their own

承蒙CNN及C/SPAN和夜间新闻之抬爱，这些议员们都因个人的论调、举止成了名人。

4.apprehension span

识别广度

5.attention span

一个人能集中注意力于某一问题的时间

7.span potentiometer

量程电位器

8.structural span

结构跨度

9.intermediate span

中间跨

10.Clear span

净跨

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