pipe pick-up and lay-down system

例句：

1. 1. The pipe ran into the wall.
   这根管子通向了墙里。
2. 2. He used a pipe to blow smoke into his mouth.
   他用一根管子往嘴里吹烟。
3. 3. The pipes were old and rusty.
   这些管子旧而生锈。