人不为己天诛地灭

来源: 又当爹来又当妈于 2026-01-17 09:30:32 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

趋利避害是一切生物的本能，不但动物连植物都按照这个法则运行

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