the conversation principle

It's a written letter not a conversation, but the principle is the same.

这是一封写好的信而不是一次谈话，但它们的原理一样的。

You can stress civility, moreover, as the guiding principle for the conversation.

你可以像谈话时用到的指导原则一样，强调礼貌原则。

This principle of co-operation is one of the things that sets conversation apart from other superficially similar activities such as lectures, debates, arguments and meetings.

这种合作原则，将“交谈”与其他肤浅交流方式如“演讲”“讨论”“辩论”“会议”等区分开来。