1.
To prevent from seeing and especially from comprehending.
使看不见，尤指使不理解
2.
I don't apprehend his meaning.
我不理解他的意思。
3.
I can't understand resigning jobs so early.
这么早离职,我不理解。
4.
The explanation is not far to seek, ie is very clear.
这种解释不难理解.
5.
make unclear or incomprehensible.
使不清楚或不能理解。
6.
could not make out what she was saying.
不能理解她在说些什么
7.
a problem above/beyond sb's comprehension
某人不能理解的问题.
8.
writing (print or handwriting) that cannot be deciphered.
写出来的东西不能理解。
9.
she cannot get her ideas across.
她的想法别人不能理解。
10.
I don't quite grasp your meaning.
我不十分理解你的意思。
11.
His ideas are beyond my grasp.
他的想法我不能理解。
12.
I cannot fathom his remarks.
我不能完全理解他的话.
13.
They couldn't understand him, could they?
他们不能理解他，是吗？
14.
Neither of them can understand.
他们俩谁也不能理解。
15.
I can't make out what you are saying.
我不能理解你说些什么。
16.
The matter is above my apprehension.
这件事我不能理解。
17.
I could make nothing of what she had said.
我不能理解她所说的话。
18.
It passes my comprehension.
那是我所不能理解的。