Translation is an activity of communication between two languages.

翻译是两种语言之间的交际活动。

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Classroom teaching, as an important social interaction, in essence, is an activity of communication between the teacher and students by means of information transmission.

课堂教学，作为一种重要的社会互动行为，从本质上来说，就是师生之间的信息交流。

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All this activity is a reaction to the growing popularity of video communication.

所有这些行为都是对视频通信越来越流行的反应。

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It took several years of further experiments and analysis, but During and his colleagues ultimately concluded that the mild stress of all that activity and interaction activated a communication channel that prompts fat cells to stop releasing a hormone called leptin, which accelerates cancer growth.

VOA: standard.2010.07.14

Moreover, is the act of reporting an exercise in external communication or more of an introspective activity to improve processes and strategies?

FORBES: PwC Canada's Third Annual CSR Report: Staying on Course

"We believe that there is a policy to punish union representatives for union activity and that must be changed, " said Steve Bell, of the Communication Workers' Union.

BBC: Appeal for end to post strike