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open up 用英语说

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open up 用英语说
open up 用英语说
open up 打开;开发;开始;展示,揭露 open up v.1.cause to open or to become open 2.become available 3.make available 4.open up an area or prepare a way 5.start to operate or function or cause to start operating or functioning 6.become open