lifting plunger

例句：

1. 1. The elevator was stuck in the middle of the floor, and we needed a lifting plunger to move it.
   电梯卡在楼层中间了，我们需要一个提升杆来移动它。
2. 2. The engineer used a lifting rod to lift the heavy machine from the basement.
   工程师使用一根提升杆将重机器从地下室抬起。
3. 3. The doctor used a lifting plunger to remove the patient's heart valve.
   医生使用一根提升杆来移除病人的心脏瓣膜。