(每日一词）comprehend

Comprehend /ˌkɒmprɪˈhɛnd/ v.  理解

meaning：If you cannot comprehend something, you cannot understand it.

1) 前缀：com-全部

2) 词根：prehend- 抓（pre + hend) 

e.g.  I just cannot comprehend your attitude.   我就是不能理解你的态度。