to explain sth by talking about it in detail 详解；详述；阐述
~ sth (to sb)
He expounded his views on the subject to me at great length.
他详细地向我阐述了他在这个问题上的观点。
~ on sth
We listened as she expounded on the government’s new policies.
我们听她详细讲解了政府的新政策。
to explain sth by talking about it in detail 详解；详述；阐述
~ sth (to sb)
He expounded his views on the subject to me at great length.
他详细地向我阐述了他在这个问题上的观点。
~ on sth
We listened as she expounded on the government’s new policies.
我们听她详细讲解了政府的新政策。