the digestive tract
消化道
a nerve tract
神经束
vast tracts of forest
大片大片的森林
1.【解】管,道,系统;(神经纤维的)束
2.广阔的地面;(一大段)土地[森林],地带;地域;广阔海面[天空]
3.(政治,宗教的)短论;小册子;传单;【天主】续唱
4.〈古〉一段时间,长时间
1.【解】管,道,系统;(神经纤维的)束
2.广阔的地面;(一大段)土地[森林],地带;地域;广阔海面[天空]
3.(政治,宗教的)短论;小册子;传单;【天主】续唱
4.〈古〉一段时间,长时间
1.a large area of land
2.a group of organs and tubes that work together in your body
3.a piece of writing expressing a strong belief, usually about religion or politics
1.A more recent novel would almost inevitably have taken on something of the nature of a tract.
如果是一部比较近期的小说，几乎一定会加上一点说教的口吻的。
2.It is usually not serious and is a localized infection of the respiratory tract, except in the elderly, very young and patients.
流感通常不是很严重，为呼吸道局限性感染，只有一些老年人，小孩和病人才会有严重并发症。
3.At this point, ~85% of these upper motor neuronal axons decussate. These fibers then descend as the lateral corticospinal tract.
至此，有大约85%的上位运动神经元轴突交叉成十字形及如皮质脊髓侧束般下降。
4.Sperm ejaculated into a woman's vagina can live in a woman's reproductive tract for up to five days or perhaps even longer.
射入女性阴道的精子可以在女性生殖管道存活至多5天，甚至更久。
5.Her eyes, wandering over a wide tract of country to the southeast, fondly rested on the farthest ridge of hills in the horizon.
她的眼光扫过一片宽广的庄稼地，掠过东南，然后痴情地滞留于地平线上最远的山梁。
6.So it is possible for a calcium tablet to pass through the digestive tract without being completely absorbed.
因此钙片可能驰过消化道而没有完全吸收掉。
7.So from the ancient bridge we viewed the train that hurried toward us along the other tract- kept moving, like the first, by stinging whips.
桥上我们了望那行列，他们正在另一边向着我们走来，同样地为鞭子所驱赶着。
8.OVERVIEW: This was an action to recover possession of a tract of land to which both plaintiff and defendant asserted title.
案件综述：该案涉及原被告双方均主张对一块土地享有权利，并要求讨回该土地的占有权。
9.while sperm can survive for several days inside a woman ' s reproductive tract , an egg can only survive for up to 24 hours after ovulation.
精子可以在女性生殖道内存活数日，而排卵后卵子仅能存活24小时。
10.The gastrointestinal tract is usually contracted with spinal and epidural anesthesia, facilitating exposure of the surgical site.
脊髓和硬膜外麻醉时胃肠道呈收缩状态有利于手术野暴露。