tract
n. 大片土地; (神经纤维的)束; 小册子; <古>一段时间,长时间
A tract of land is a very large area of land.
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。
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.
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 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.
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。
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
He wrote a tract on this subject.
他曾对此写了一篇短文.
The suggestions maintaining the normal count of Bifidobacteria in human intestinal tract were forward as well.
并阐述了部分作用机理,提出了维持人体肠道正常双歧杆菌数量的建议.
Blastocystis hominis is a unicellular protozoan commonly found in the intestinal tract of human and mammal.
人芽囊原虫是一种常见的人和哺乳动物肠道寄生原虫.
RS infection usually manifests as an upper respiratory tract infection with symptoms resembling a cold.
RS感染通常表现为上呼吸道感染症状,与感冒相似.
Objective : To compare among ceftriazone, penicillin, and ciprofloxacin in the treatment of lower respiratory tract infection.
目的: 比较头孢曲松 、 青霉素和环丙沙星治疗下呼吸道感染的疗效及经济成本.