"老美" 这里是什么意思？是美国籍很久了？

来源: 数学博士于 2024-02-16 17:21:30 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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"老美" 这里是什么意思？ 是美国籍很久了？