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tract是什么意思？

基础释义
例句
柯林斯词典释义
英汉词典释义
英英词典释义
行业词典释义

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;

相关单词 abstract alimentary tract attract be hired on contract break a contract cancel a contract contract detract digestive tract distract

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.

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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

(宗教、道德或政治的)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。

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；