葱姐好，看到下面跟帖说的美国人口2/3在边界线100迈之内，于是就算了一下。

来源: 老生常谈12 于 2022-07-19 05:53:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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