discourse
noun formal uk/ˈdɪs.kɔːs/ us/ˈdɪs.kɔːrs/
[ U ]对话;交流
communication in speech or writing
[ C ]演讲，演说;论文，文章
a speech or piece of writing about a particular, usually serious, subject
a discourse on/upon the nature of life after death 关于来世之实质的文章