好像你的理解与我相反。PVC树根钻不进，树根能钻入管道是因为铁管绣了，或接头的地方有些须的缝。

来源: 守月于 2023-01-10 10:32:25 [旧帖] [给我悄悄话] 本文已被阅读：次

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