tract

The doctor prescribed medicine to treat an infection in her upper respiratory tract.

(Chinese) 医生开了药来治疗她上呼吸道的感染。

Fiber is essential for maintaining a healthy digestive tract.

(Chinese) 膳食纤维对于维持健康的消化道至关重要。

The government protected a vast tract of rainforest from logging and mining.

(Chinese) 政府保护了一大片热带雨林免受伐木和采矿的破坏。

They purchased a large tract of land in the countryside to build a retirement home.

(Chinese) 他们在郊区买了一大块地来建造养老院。