Virtual private networks ( VPNs ) provide customers with a secure and manageable communication environment.

虚拟私人网路提供客户安全及易于管理的通讯环境.

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A C language source code for communication environment is useful for communication engineers.

用于通信环境的C语言源程序,对通信工程人员有用.

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Code - switching in classroom setting differs in everyday communication environment in the pragmatic motive.

课堂环境与自然交际环境中语码转换的语用动机有较大区别.

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