字打不出來。。。於是就算了。。。元素周期表到現在我隻記得這六個東西的位置。。呃，還有氫氣

來源: 紫色海洋於 2022-11-22 05:19:39 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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