tract

复数：tracts

1. [C]大片土地；地带 large stretch or area of land
2. [C]道，束 system of connected tube-like parts along which sth passes

• the digestive tract消化道
• the respiratory tract呼吸道
• the urinary tract尿道

respiratory tract呼吸道

urinary tract[医]尿路；泌尿道

digestive tract消化道

gastrointestinal tract胃肠道；胃肠管

upper respiratory tract上呼吸道

urinary tract infection尿路感染；尿道发炎

biliary tract[医]胆道

intestinal tract[医]肠道

alimentary tract消化道

upper respiratory tract infection上呼吸道感染

reproductive tract[医]生殖系统；[生]生殖系

genital tract生殖道；产道

vocal tract声道

corticospinal tract[医]皮质脊髓束；皮层脊髓束

1. He owns a large tract of forest.
   他拥有一大片森林。
2. He took many photos of the wide tracts of desert in North Africa.
   他拍了许多关于北非的广大沙漠的照片。
3. Osteoporosis is a late complication of digestive tract disease.
   骨质疏松症是消化道疾病的晚期并发症之一。
4. He had an infection in the upper respiratory tract.
   他上呼吸道感染。
5. The tract ascends all the way to the VPL of the thalamus where it synapses on the tertiary neurons.
   此束会上升至丘脑腹后外侧核且于此与三级感觉神经元建立突触。
6. There is no decussation in the lateral corticospinal tract after the decussation at the medullary pyramids.
   它们在髓状锥体交叉后，不会在皮层脊髓侧束中交叉。

1. He wrote all the campaign tracts.
   这些竞选传单全是他写的。