两千年里，螺旋式上升也就几百年。科学革命到现在已经四百年了。好好留心：有多少人是一代不如一代的。

来源: ScottGu 于 2024-09-21 07:23:39 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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