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FAQ/28/zh-hans
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From Wikimania 2012 • Washington, D.C., USA
除护照外我还需要哪些额外文件以进入美国?
来自特定国家的旅行者在入境前需要获得
签证
。
若需要签证,请在报名后尽早开始签证申请,申请过程可能花费很长时间。
参见
签证
以获得更多信息。来自参与免签证计划国家的旅行者仍需要按照
旅行许可电子系统
完成在线申请。
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