已經加進去了 叫social mobility
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• 哈哈~ 美国的校园就是社会主义和共产主义的温床 -锦衣卫- ♀ (237 bytes) () 09/14/2020 postreply 10:00:09
• 哈哈~ 美国的校园就是社会主义和共产主义的温床 -锦衣卫- ♀ (237 bytes) () 09/14/2020 postreply 10:00:09
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