dry crankcase

例句：

1. 1. The enginewas removed from the car for inspection.
   引擎被从汽车中取出进行检查。
2. 2.The mechanic replaced the worn out parts with new ones.
   技师用新的零件替换了磨损的部分。
3. 3.The dry crankcase is essential for maintaining the engine's efficiency.
   干式曲轴箱对于保持发动机的效率至关重要。