關於第二定律，《墨經·經上》這樣表述：“力，刑之奮也。”“力，重之謂。下與重，奮也。”

來源: 美國老師於 2024-04-07 18:02:56 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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