Discourse relevance determines two types of conversational discourse coherence: propositional content coherence and contextual effect coherence.

话语关联性决定着两种类型的会话语篇连贯：命题内容连贯和语境效果连贯。

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Conversational implicature is one of the most important concepts in pragmatics whereas cohesion and coherence are two basic research fields of discourse analysis.

会话含意是语用学中最重要的概念之一。衔接和连贯是话语分析的两个主要研究领域。

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Since conversational discourse and written discourse have their respective characteristics, there must be different means of understanding the coherence of the two kinds of discourse.

会话语篇和书面语篇各有特点，解读这两类语篇的连贯性也各有不同的依据。

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