n.管道；导管
vt.用导管输送
One of the air-ducts has become blocked. 有一条输气管堵塞了。
Air is heated and then circulated through large ducts to all parts of the house. 空气被加热，然后通过大的管道传送到房间的各个角落。
In the center is a duct lined by carcinoma cells. 中央为有癌细胞排列于其中的导管。
Remove the defroster duct from the instrument panel. 从仪表板上拆下除霜器导管。
用作及物动词 (vt.)They duct the moist air away. 他们用管道排除湿气。
管内的
水管周围的
