difficult problem
难题
常用释义
英式发音
美式发音
基本释义
- 困难问题：指具有挑战性、复杂性或难以解决的问题。
例句
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1·In itself, it's not a difficult problem to solve.这本身并不是个难解决的问题。来源: 《牛津词典》
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2·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。
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3·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。
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4·She is working at a difficult problem in mathematics.她在做一道数学难题。来源: 《新英汉大辞典》
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5·It's really a difficult problem.这真是个难题。
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6·At first there was a seemingly difficult problem.在开始的时候存在一个难题。
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7·Never have I come across such a difficult problem.我还从没有遇到过这样困难的问题。
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8·He soon turned his attention to the difficult problem.他很快把注意力转到这个难题上。
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9·The greatest scholar cannot solve this difficult problem.再伟大的学者也没有办法解答这个难题吧。
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10·Fortunately, it's not a difficult problem (see Listing 6) to fix.所幸的是，这个问题不难解决(见清单6)。