lower inlet for medium

例句：

1. 1. Thelower inlet is where the water enters the system.
   下进水口是水进入系统的地方。
2. 2. The lower inlet is responsiblefor filtering out pollutants.
   下进水口负责过滤掉污染物。
3. 3. The lower inlet is crucial for maintaining the proper flowof water.
   下进水口对于保持水流的正常流动至关重要。