你的亲戚朋友代表１０％，５０％，还是９０％的中国人生活水平？

来源: 于 2014-11-16 11:05:51 [旧帖] [给我悄悄话] 本文已被阅读：次

Just curious, at what age did you come to US? How much interaction do you have with the real native English speakers in  your daily life?