美国过去的所谓中产阶级一直在萎缩，有些由于通胀等原因降到了低收入阶层，有些升到了“上中层”

来源: 提问题于 2026-03-22 05:53:29 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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