apprehend v．领会，理解
例句：The police are anxious to apprehend a young man believed to be armed with a gun．
警察急于逮捕一名确信携有枪支的青年人。

apprehension n．理解，忧惧
例句：They waited for their decision with a great deal of apprehension.
他们怀着极其焦虑的心情等待他们作出决定。

comprehend v．领会，理解
例句：I believe that he could comprehend the feeling, and share both its strength and truth.
我相信他可以理解这种感情，而且分享它的力量和真诚。

comprehension n．理解，包含
例句：Algebra is beyond the comprehension of lower-class pupils, so is calculous.
代数是低年级学生所无法理解的，微积分也是。

comprehensive adj. 全面的，综合的，广泛的．
例句：The boys' and girls' schools have been converged to form a new comprehensive middle school．
男校和女校联合组成了一所新的综合中学。