常识而已。元素怎能买卖? 只有产品才可贸易。

来源: 清源白水于 2023-07-04 13:45:45 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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常识而已。 元素怎能买卖? 只有产品才可贸易。