第三人称单数：数：expounds
过去分词：expounded
过去式：expounded
论述，详细讲解( expound的现在分词 )；
1. 說明的：adnominal clause 說明名詞的子句 | expounding 說明的 | ethnography of speaking 說話人種誌
noun
1. a systematic interpretation or explanation (usually written) of a specific topic
Synonym: exposition
