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1·Phatic communion: It refers to the social interaction of language.

交感性谈话：指的是语言的社会交互性。

2·Therefore, it indicates social importance and function of phatic communion.

从而说明了应酬语的重要社会意义和作用。

3·In social interaction, phatic communion is an important way for people to establish and maintain their social relationship.

在社会交往中，应酬语是人们建立和维护自己的社会关系的重要手段。