Realistic difficult problem 现实难题
big and difficult problem 老大难 ; 老大难”
a difficult problem you solved 你解决的难题
Explanation difficult problem 解答难题 ; 解释难的问题 ; 解释困难的问题 ; 讲解难题
attempt a difficult problem 试着解答难题
Very difficult problem 很头痛的问题
Particularly difficult problem 特别难的题
explain a difficult problem 解释难题
This is a difficult problem 这是一个棘手的问题
In itself, it's not a difficult problem to solve.
这本身并不是个难解决的问题。
How to improve the quality of products was a difficult problem to him.
如何提高产品质量对他来说可是个难题。
Extracting heat from very hot, dry rocks presents a more difficult problem: the rocks must be fractured to permit the circulation of water, and the water must be provided artificially.
从极热的而干燥的岩石中提取热量,暴露出了一个更加困难的问题:必须击碎岩石以保证水的循环,而水必须是人工提供的。
She began to explain to the students how to solve a very difficult problem.
VOA: special.2009.10.25
It's a difficult problem that not everyone is smart -they vary in their ability -so we try to make a world in which it's pretty safe for the small investor who's not paying attention.
不是所有人都是聪明人,这是个难题,大家能力不同,所以我们试图营造一个环境,一个让小投资者感到安全的环境,而无需忧心忡忡
It shouldn't be difficult to see a kind of problem that is beginning to arise in Milton's text here.
这是一个很容易看出的问题,在弥尔顿的作品中也被提了出来。
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