expound
US
UK expound [sth] vtr: (set out: idea, theory)
SC 阐述 chǎn shù
TC 闡述
TC 闡述
Jane expounded a revolutionary idea about the use of chlorophyll in medicine.
expound on [sth] vi + prep: (talk at length about)
SC 详细解释 xiáng xì jiě shì
TC 詳細解釋
TC 詳細解釋
SC 详述 xiáng xì jiě shì，xiáng shù
The professor expounded on the ancient history of Russia.