valve passage

例句：

1. 1. The valve passage is crucial for the proper functioning of the pump.
   阀门通道对于泵的正确运行至关重要。
2. 2.The engineer designed a new valve passage to improve efficiency.
   工程师设计了一种新的阀门通道以提高效率。
3. 3. The passage through the mountain passes through several valleys.
   这条穿过山脉的通道穿过了几个山谷。