tract
tract
英[trækt]美[trækt]
n.大片土地，（神经纤维的）束，小册子，<古>一段时间，长时间；
复数：tracts;
例句
He’s suffering from an acute infection of the lower respiratory tract.他患有急性下呼吸道感染。
In the past nothing could grow on this tract of land.过去这块地不立苗.
Acute pharyngitis is a common upper respiratory tract disease in children.急性咽炎是一种常见的上呼吸道病的儿童.
They have lifted water from the Yellow River onto the high land and reaped a good cotton harvest on a 300 - acre tract.他们把黄河水引上高原,使300公亩棉田获得丰收.
To the north of the river is an immense wooded tract.河北面是一大片林地.
A vast tract of land is ready for development.一大片广阔的土地可待开发。
Amyotrophic lateral sclerosis ( ALS ) involves upper neuron , lower neuron and corticospinal tract.肌萎缩侧索硬化 症 累及部位包括上 、 下运动神经元以及皮质脊髓束.
In the absence of an obstructive lesion of the urinary tract, this illness is self - limited.若无尿路梗阻, 则本病具有自限性.
Sex hormon have no effect on laryngeal nerve - tract and nerve fiber.喉部神经纤维束的粗细,在变性期后可能不受性激素的影响.
The site urinary tract obstruction and hydronephrosis could be clearly shown.结果所有病例均清晰显示梗阻部位及尿路积水情况.
英语六级真题
A global campaign has been launched to turn a huge tract of Antarctic seas into ocean sanctuaries, protecting wildlife and banning not just krill fishing, but all fishing.
2019年12月六级真题（第二套）阅读 Section C柯林斯高阶英汉双解学习词典释义
N-COUNT
(土地等的)大片
A tract of land is a very large area of land.
例句
A vast tract of land is ready for development...一大片广阔的土地可待开发。They cleared large tracts of forest for farming, logging and ranching.他们清除了大片的森林以经营农耕、采伐与畜牧。N-COUNT
(**、道德或**的)短文
A tract is a short article expressing a strong opinion on a religious, moral, or political subject in order to try to influence people's attitudes.
例句
She produced a feminist tract, 'Comments on Birth-Control', in 1930.她 1930 年写了篇女性主义的短文《论节育》。N-COUNT
道;束
A tract is a system of organs and tubes in an animal's or person's body that has a particular function, especially the function of processing a substance in the body.
例句
Foods are broken down in the digestive tract...食物在消化道里分解。A cold is an infection of the upper respiratory tract.感冒是上呼吸道的感染。英汉词典释义
n.
大片土地; 地带
There are tracts of desert in Australia.澳大利亚有大片沙漠。（体内的）道，束
（尤指宣扬**、伦理或**的）短文，传单，小册子
英英词典释义
Noun
1. an extended area of land
2. a system of body parts that together serve some particular purpose
3. a brief treatise on a subject of interest; published in the form of a booklet
4. a bundle of mylenated nerve fibers following a path through the brain
行业词典
体育： 纤维束；
动物学： 神经束；又称 :神经束(fasciculus )；
医学： 束：主要指有一定长度的区域，特别是起源、功能和终止皆同的神经纤维的集合，即神经束；道：担负某一共同机能的若干脏器的有序组合，如呼吸道，泌尿道；
生物学： 壳体；
