就这条右边的，5万迈7岁时换下的

来源: MoonRiverMe 于 2019-09-28 18:33:09 [旧帖] [给我悄悄话] 本文已被阅读：次

裂到一半了可是受力的筋骨还没伤着,那些突出来的棱不是受力而是增加摩擦力的

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