那天我忽然意识到四足动物的四肢位置区别，爬行动物四肢都长在身体外侧，多数哺乳动物四肢都长在身体下面，

来源: 移花接木于 2025-07-10 06:52:33 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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