pipeloop

例句：

1. 1. The pipe looped around the wall and blocked the door.
   管子绕在墙上，堵住了门。
2. 2.He was trying to unclog the pipe with a plunger.
   他正用一个泵试图疏通管道。
3. 3. The plumber had to replace the broken pipe.
   水管工不得不更换那个破裂的管子。