pipe-pushing

例句：

1. 1. The engineer was pushing the pipe to clear the blockage.
   工程师正在推动管道以清除堵塞。
2. 2. The car's engine is pushing the piping system to its limit.
   汽车的引擎正将管道系统推向极限。
3. 3. The workers were pushing the heavy pipe into the wall.
   工人们正将沉重的管道推进墙里。