piston cooling water pump

例句：

1. 1. The piston cooling water pumpis essential for maintaining the engine'stemperature.
   活塞冷却水泵对于保持发动机温度至关重要。
2. 2.The piston cooling water pump is responsiblefor circulating coolant throughout theengine.
   活塞冷却水泵负责在整个发动机中循环冷却液。
3. 3. The piston cooling water pumpis designed to prevent overheating andensure optimal performance of the engine.
   活塞冷却水泵设计用来防止过热，确保发动机的最佳性能。