1.
You are a difficult case.
你是个老大难问题。
2.
We should solve the problem of difficult enforcement of judgments.
切实解决执行难问题。
3.
a knotty problem, question, etc
难以解决的疑难、 问题等.
4.
the resolution of a problem, question, difficulty, doubt, etc
难题、 问题、 困难、 疑问等的解决.
5.
Senior Adviser on Refugee Women
难民妇女问题高级顾问
6.
Don't ask me such complicated questions.
这么难答的问题别问我。
7.
difficult problem or situation
为难的问题或情况.
8.
a recurrent problem [difficulty]
反复地发生的问题[困难]
9.
You cannot see the wood for the trees.
见树不见林，问题难看清
10.
ne was stuck by this question.
他被这个问题难住了。
11.
Technical Committee on Refugees
难民问题技术委员会
12.
Advisory Committee on Refugees
难民问题咨询委员会
13.
Intergovernmental Committee on Refugees
难民问题政府间委员会
14.
Commission of Fifteen on Refugees
难民问题十五国委员会
15.
Communique on the Central American Refugees
中美洲难民问题公报
16.
Joint Commission on Refugees
难民问题联合委员会
17.
Committee on Refugee Children
难民儿童问题委员会
18.
Coordinator for Refugee Children
难民儿童问题协调员