小导管

例句：

1. 1. The engineer used a small hydraulic tube to deliver the water.
   工程师使用一个小液压管输送水。
2. 2.The construction crew had to work around the small ducts in the wall.
   施工队不得不在墙上的小管道周围工作。
3. 3.The plumber used a small pipe wrench to tighten the small duct.
   水管工用一个小管道扳手紧固了小管道。