從這到有vent的點，水不容易下。會形成：噪音(影響隔壁睡房)，吸走U管水封(臭味)，下水慢

來源: 味苦於 2019-08-15 09:51:40 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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