地下室 sump pump有兩種， 1. sewage pump, 2. underground water pump.

來源: smlandlord 於 2024-01-20 13:35:15 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (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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