I asked similiar question. Somebody gave helpful answer

来源: ya_ya 于 2013-06-05 12:50:32 [] [旧帖] [给我悄悄话] 阅读数 : (194 bytes)
回答: alaska cruise 由 april 于 2013-06-05 12:30:39

but I still not sure. if you get definite info, can you share with me?

http://bbs.wenxuecity.com/cruise/371322.html

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