tract

英 [trækt]

美 [trækt]

n. (连通身体组织或器官的)道，束; 大片土地; 地带; (尤指宣扬宗教、伦理或政治的)短文，传单，小册子

复数：tracts　

Collins.1 / BNC.6081 / COCA.6133

牛津词典

noun

（连通身体组织或器官的）道，束
a system of connected organs or tissues along which materials or messages pass
1. the digestive tract
  消化道
2. a nerve tract
  神经束
大片土地；地带
an area of land, especially a large one
1. vast tracts of forest
  大片大片的森林
（尤指宣扬宗教、伦理或政治的）短文，传单，小册子
a short piece of writing, especially on a religious, moral or political subject, that is intended to influence people's ideas

N-COUNT (土地等的)大片
Atract ofland is a very large area of land.
1. A vast tract of land is ready for development...
  一大片广阔的土地可待开发。
2. 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
Atractis a short article expressing a strong opinion on a religious, moral, or political subject in order to try to influence people's attitudes.
1. 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
Atractis 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.
1. Foods are broken down in the digestive tract...
  食物在消化道里分解。
2. A cold is an infection of the upper respiratory tract.
  感冒是上呼吸道的感染。
3. ...urinary tract infections.
  尿路感染

noun

a bundle of myelinated nerve fibers following a path through the brain
Synonym:nerve pathwaynerve tractpathway
a system of body parts that together serve some particular purpose
a brief treatise on a subject of interest
Synonym:pamphlet
an extended area of land
Synonym:piece of landpiece of groundparcel of landparcel

Outcomes included respiratory tract and other illnesses, incidence rate ratios, and vaccine effectiveness.
结果包括呼吸道和其它的疾病，发病率的比例和疫苗效价。
A vast tract of land is ready for development
一大片广阔的土地可待开发。
Water is ideal to flush the kidneys and the urinary tract.
用水清洗肾脏和尿道最理想不过。
Objective To improve X-ray in diagnosis of newborn congenital digestive tract malformation.
目的提高和普及新生儿先天性消化道畸形X线诊断水平。
A cold is an infection of the upper respiratory tract.
感冒是上呼吸道的感染。
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》。
A B vitamin essential for the normal function of the nervous system and the gastrointestinal tract.
一种B类维生素，对于维持神经系统和胃肠道的正常功能起关键作用。
Such as colds can trigger the upper respiratory tract infection.
像感冒等上呼吸道感染就能够引发此病。
Instruments developed at the hospital allow doctors to thread microscopic telescopes into the digestive tract.
医院开发研制的仪器使医生们得以将显微内镜伸入消化道。
So it's necessary for you to be careful not to catch cold and other upper tract respiratory infections.
因此，患者一定注意防寒，预防感冒和上呼吸道感染等。