我平时在小学做义工，看到recess的时候，低年级的孩子还不那么明显，高年级的孩子更多的是相同族裔的孩子玩在一起

来源: ydtj 于 2017-03-29 11:00:25 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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