回复：绿卡身份要回国工作，一年至少要回美国几次？

来源: @qyj 于 2005-01-21 00:06:50 [] [旧帖] [给我悄悄话] 阅读数 : (89 bytes)

If you want to keep your green card, every year you have to live in US at least half year

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