谢谢解惑。在指点之下，又看了看，发现手指手掌也是扶手一部分。第一个B2，B21还是看不出来呀。

来源: JoyAnna. 于 2026-01-13 07:51:33 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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