The group voice communication is very good realization network conference, has greatly saved the correspondence expense for users.
群组语音通信很好的实现了网络语音会议，为用户大大节省了通信费用。
The group voice communication is very good realization network conference, has greatly saved the correspondence expense for users.
群组语音通信很好的实现了网络语音会议，为用户大大节省了通信费用。
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