举个例子！ H2O 这个化学名字建立之前，难道水就不是一个氧两个氢？是硫磺不成？？？？

来源: 风调雨顺2020 于 2020-07-31 08:10:45 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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