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https://www.brookings.edu/blog/social-mobility-memos/2016/12/08/on-the-new-chetty-bomb-that-only-half-of-americans-are-better-off-than-their-parents/
您即将离开知乎,请注意您的帐号和财产安全。
https://www.brookings.edu/blog/social-mobility-memos/2016/12/08/on-the-new-chetty-bomb-that-only-half-of-americans-are-better-off-than-their-parents/