-45/-15=21=2+1=3，没错呀，你这个老师不合格，换爪

来源: 爪四哥于 2019-09-06 12:26:50 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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-45/-15=21=2+1=3， 没错呀，你这个老师不合格，换爪