elucidate -------- 阐发（及物动词/不及物动词）

英文释义
(transitive verb/intransitive verb) To make something easier to understand; to clarify, usually by providing additional details.

例句
I didn't understand my professor's brief explanation of the complicated theory, and so I asked him to elucidate.
我没有理解教授对这个复杂理论的简单解释，所以请他阐释一下。