地下室 sump pump有两种， 1. sewage pump, 2. underground water pump.

来源: smlandlord 于 2024-01-20 13:35:15 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (228 bytes)

The sewage pump should always sealed and connected to your sewage drain, while the underground water pump usually only has a lid and is open, the water is pumped to above above-ground surface, just outside of the house.

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