trailer pump

例句：

1. 1.The trailer pump is used to remove water from the tank.
   拖车泵用于从水箱中抽水。
2. 2.The trailer pump is essential for maintaining proper pressure in the system.
   拖车泵对于保持系统压力至关重要。
3. 3.The trailer pump was damaged during the accident, which caused a delay in the repair process.
   事故导致拖车泵损坏，延误了修理进程。