self priming pump

例句：

1. 1. The self-priming pump is designed to automatically prime the fuel system when the engine starts.
   自激泵设计为在发动机启动时自动启动，以自动给燃油系统供油。
2. 2. The self-priming pump is a critical component of the fuel system that ensures proper fuel delivery.
   自激泵是燃油系统中的关键组件，它确保了燃料的正确输送。
3. 3. The self-priming pump is an essential safety feature that prevents fuel from leaking into the engine.
   自激泵是一种重要的安全特性，它防止燃料泄漏到引擎中。