通氣管堵與下水道堵還是能分辨出來的，馬桶放水時臨近的p trap水會被抽幹，girdling,打嗝聲並伴有下水道臭味

來源: 移花接木於 2018-02-15 16:18:14 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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