國內很少，尤其在大城市以外地區，3g很重要，而且比美國便宜很多。短期旅行非常合適

來源: 用戶名被占用了於 2011-09-03 07:44:21 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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