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

If not treated: they can cause urinary tract infections.
如果不治疗：可造成尿道感染。
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。
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。
The most common side effects in clinical studies were upper respiratory tract infection, sore throat, and diarrhea.
临床研究中最常见的副作用是上呼吸道感染，喉咙痛和腹泻。
Abs tract: Algae removal has been a rather important issue in China's water plants.
在我国的水厂中，藻类去除一直是一个比较重要的问题。
Foods are broken down in the digestive tract
食物在消化道里分解。
Fresh fruits and vegetables are easily digested in the GI tract and do not cause systemic effects.
新鲜水果和蔬菜很容易在GI系统中消化并不会影响系统。
Conclusion Fiberoptic bronchoscopy is an important tool to diagnose and remove foreign bodies of the lower respiratory tract.
结论纤支镜可作为对下呼吸道异物诊断和钳取的重要工具。
The atmosphere is often highly irritating to the eyes and to the respiratory tract.
大气常会刺激眼睛和呼吸系统。
A vast tract of land is ready for development
一大片广阔的土地可待开发。