一般來說sinkhole是由於地下水管破裂，長期衝刷造成的。所以住家周圍的下水管要確保完整，不然，房子會下沉

來源: 王員外於 2014-02-19 15:27:21 [舊帖] [給我悄悄話] 本文已被閱讀：次

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