- 释义：
- n. 大片土地；地带；管道
- 例句：
-
He's suffering from an acute infection of the lower respiratory tract.
他患有急性下呼吸道感染.
换一句
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In the past nothing could grow on this tract of land.
过去这块地不立苗.
换一句
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They have lifted water from the Yellow River onto the high land and reaped a good cotton harvest on a 300 - acre tract.
他们把黄河水引上高原,使300公亩棉田获得丰收.
换一句