expound

动词 expound:

1. add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
   同义词：elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, dilate
2. state
   同义词：set forth, exposit

1. Our teacher expounded his views on education to me at great length.
   我们的老师向我详细讲述了他的教育观点。
2. He expounded the reasons why he did it.
   他阐述了他做这件事的理由。

ex.pound

v.（动词）
ex.pound.ed,ex.pound.ing,ex.pounds
v.tr.（及物动词）
To give a detailed statement of; set forth:
详述：详细叙述；阐明：
例句：
expounded the intricacies of the new tax law.
阐明新税法的复杂性

To explain in detail; elucidate:
解释：详细解释；阐述：
例句：
The speaker expounded the approach of positive thinking.See Synonyms at explain
发言人阐述了反动思潮的出现参见 explain

v.intr.（不及物动词）
To make a detailed statement:
陈述：做详细的陈述：
例句：
The professor was expounding on a favorite topic.
教授正在对一个令人喜欢的话题详加陈述

来源：
Middle English expounden
中古英语 expounden
from Anglo-Norman espoundre
源自 英法语 espoundre
from Latin expônere
源自 拉丁语 expônere
ex- [ex-]
ex- [前缀，表.…之外.]
pônere [to place] * see apo-
pônere [完全认定] *参见 apo-

【引伸】
expound.er
n.（名词）