好像你的理解與我相反。PVC樹根鑽不進，樹根能鑽入管道是因為鐵管繡了，或接頭的地方有些須的縫。

來源: 守月於 2023-01-10 10:32:25 [舊帖] [給我悄悄話] 本文已被閱讀：次

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