self-priming pump

例句：

1. 1.The self-priming pump is designed to automatically prime the fuel system when the engine starts.
   自激式泵设计为在发动机启动时自动给燃油系统充压。
2. 2.In this case, the self-priming pump was responsible for ensuring that the water supply was always available.
   在这种情况下，自激式泵负责确保水供应始终可用。
3. 3. The self-priming pump is a crucial component of any modern vehicle's engine system.
   自激式泵是任何现代车辆引擎系统的至关重要的组成部分。