1.
beyond belief or understanding.
难以置信或者难以理解。
2.
a muddled explanation which was scarcely intelligible
难以理解的胡涂解释.
3.
Difficult to perceive or grasp by the mind.
难懂的难以理解的或隐晦难懂的
4.
What you wrote is out of my range
你所定的我难以理解。
5.
unfathomablemotives, mysteries
难以理解的动机、 奥秘.
6.
Philosophy: unintelligible answer to insoluble problem.
哲学：是对难以解释的问题作出难以理解的答案。
7.
His reasoning went beyond us
他的推理使我们难以理解。
8.
It's difficult for the young people to accustom to the elderly people's ideas.
年轻人难以理解老年人的心理。
9.
To read or interpret(ambiguous, obscure, or illegible matter.
解读解读（含混、难以理解或无法辨认的东西）
10.
It is a most inscrutable and unmitigated staggerer!
这倒是一个难以理解和无法弄清楚的难题。
11.
making great mental demands; hard to comprehend or solve.
需要极大的心理上的努力；难以理解或者解决。
12.
Philosophy:unintelligible answers to insoluble problems.
哲学：是对难以解释的问题作出的难以理解的答案。
13.
He could hardly realise how it had all come about.
他难以理解这一切是怎么发生的。
14.
I think it 's mean to be hard to understand .
我想这是有意叫人难以理解。
15.
To make obscure or confused.
使迷惑使难以理解或糊涂
16.
not apprehensible even to professional men
连专门家也难以理解的(东西)
17.
His language is difficult to understand today.
他的语言现在来看非常难以理解，
18.
It is Beyond my understanding that he should fail in the exam.
他竟然没有考及格，真是使我难以理解。