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- to unravel a difficult problem 解决一个难题
- It's a difficult problem and I should like to go over the ground again. 这个问题是很麻烦，我想再了解一下情况。
- How to quiet title is still a difficult problem. 如何决定所有权仍然是一个困难问题。
- In itself, it's not a difficult problem to solve. 这本身并不是个难解决的问题。
- We have a difficult problem to solve. 我们有一个难题要解决。
- The teacher set his pupils a difficult problem. 老师给学生出了一道难题。
- To present a difficult problem to; puzzle. 难住使面对一个难题
- It's really a difficult problem. 我们该怎么办。
- We found it a difficult problem. 我们发现这是一个难题。
- Never have I come across such a difficult problem. 我还从没有遇到过这样困难的问题。
- A difficult problem or two occupied his mind. 有一两个困难问题在他心里回旋。
- A difficult problem or question. 难题，令人费解的问题
- This is the attitude that led to unravel a mystery that long puzzled Chinese historians. 正是这种态度使他解决了长期以来使中国历史学家们大惑不解的谜。
- This is the attitude that led him to unravel a mystery that long puzzled Chinese historians. 正是这种态度使他解决了长期以来使中国历史学家们大惑不解的谜。
- She is working at a difficult problem in mathematics. 她在做一道数学难题。
- This failure threatens to unravel a flimsy diplomatic consensus that dates back to the 1997 Kyoto protocol. 这一失败将可能瓦解自1997年京都议定书签署以来达成的脆弱的外交共识。
- Humans exhaust their intelligence and financial resources, and even sacrifice their lives, just to unravel a small part of the mystery of the universe. 人类穷其智慧,耗尽财力,甚至牺牲性命,就想一窥宇宙的奥秘。
- There is still a good deal to unravel. 还有不少问题要澄清。
- This is a difficult problem,yet to be adequately resolved. 这是一个难题，有待充分解决。
- The excavation is expected to unravel a number of questions that have lingered over the couple, including whether they were buried together, Cleopatra's reputed beauty and their suicide. 围绕埃及艳后和安东尼一直存在诸多谜团，如他们如何自杀、死后是否合葬、以及艳后是否真的沉鱼落雁等。考古队希望发掘工作能揭开谜团。
