波大说的对。下水一个P trap 就可以了，中间的那个隔板钻个2.5''的洞，一边的下水流到另一边的有P trap的

来源: logyliang2002 于 2024-05-28 11:17:48 [旧帖] [给我悄悄话] 本文已被阅读：次

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