H-4在AOS（調整身份）期間能在境外住多久？有時間限製嗎?
-As longer as you want and no時間限製. But if your I-485 is approved during your staying outside U.S., you can not get an H-4 visa to come back.
-As longer as you want and no時間限製. But if your I-485 is approved during your staying outside U.S., you can not get an H-4 visa to come back.
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