rabbit tube

例句：

1. 1. The engineer designed a rabbit tube to connect the two buildings.
   工程师设计了一个兔子管道来连接两座建筑。
2. 2. The rabbit tube was used to transport waste gases from the factory.
   兔子管道被用来输送工厂的废气。
3. 3. The rabbit tube was a crucial part of the pipeline system.
   兔子管道是管道系统的关键部分。