數據至少比身邊熟人的個案可信得多

來源: fantasticdream 於 2019-07-09 05:06:21 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

雖然中國的數據水份較大

但一個人能認識多少人？

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