crankcase sump

例句：

1. 1. The crankcasesump is designed to protect the enginefrom water damage.
   曲柄箱式泵的设计是为了保护发动机免受水害。
2. 2. Thecrankcase sump was installed toprevent flooding during heavy rains.
   安装曲柄箱式泵以防止大雨期间的洪水。
3. 3. The crankcase sump isa crucial component of the engine'sprotection system.
   曲柄箱式泵是发动机保护系统的关键组成部分。