Facebook's private messaging system is only one way they foster communication among members.

Facebook ' s私人消息系统是唯一一种促进用户沟通的方式。

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Based ITS Intelligent Vehicle location and navigation system could be divided into three levels: autonomous navigation systems, communications systems and two-way one-way communication system.

基于ITS的智能车辆定位导航系统可划分为三个层次：自主导航系统、单向通信系统和双向通信系统。

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The instant communication of the chat room system has met the need that many people chat at the same time, and people can converse in an easy way on one page.

聊天室系统的即时交流方式满足了网络中多人同时聊天交流的需求，使得较多的人在同一个聊天页面停止交流变得便当，简单。

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"Throughout all this it has been a one-way system and at no point have we had proper communication from Orange, " she said.

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