pump barrel

例句：

1. 1. The pump barrel was filled with water, ready to be used.
   泵筒被装满了水，准备使用。
2. 2.The pump barrel was removed from the well and replaced with a new one.
   从井中取出泵筒并用新的替换。
3. 3.The pump barrel was cleaned and inspected for any damage or wear.
   泵筒被清洗并检查是否有损坏或磨损。