很多動物，比如小鹿，睡眠全靠打盹，經常隻睡幾秒鍾，分段進行。人做夢也會有失足掉下懸崖的反射。人類還在樹上時遺留的。

來源: 布蘭雅於 2023-01-25 15:59:10 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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