Discourse has two levels: primary discourse and meta-discourse.
语篇有两个层面：主语篇和元语篇。
参考来源 - 试析非英语专业学生元语篇手段的使用模式
·2,447,543篇论文数据，部分数据来源于NoteExpress
Metadiscourse
abstract:Metadiscourse is a term that is used in philosophy to denote a discussion about a discussion (and so on), as opposed to a simple discussion about a given topic.