您要查找的是不是：
- The students are working on a mathematical problem. 学生们正在解一道数学习题。
- He has worked out a mathematical problem. 他算出了一道数学题。
- She was absorbed with the mathematical problem. 她专心致志地演算数学题。
- It took him twenty minutes to work the last mathematical problem. 他花了二十分钟的时间计算出最后一道数学题。
- They quarrelled with one another about how to solve the mathematical problem. 他们就如何解这道数学题而彼此争论起来。
- Somehow he again made a mistake in solving the mathematical problem. 不知怎么地, 他在解这道数学题时又算错了。
- Computer can solve the most complex mathematical problems or put thousands of unrelated facts in orders. 计算机能解决十分复杂的数学问题，也能把成千上万件不相关的事件整理得井井有条。
- This mathematical problem is really difficult; it's got me confused. 这道算题真难，把我搞得晕头转向。
- I couldn't touch these mathematical problems. 这几道数学题我一点也答不出来。
- Som eh ow or other he again made a mistake in solving the mathematical problem. 不知由于什么原因，他那个数学题又做错了。
- This mathematics problem is extremely difficult. 这道数学题难度很大。
- Mathematical problems in environmental science and engineering. 环境科学与工程中的数学问题。
- In this paper the core problem to solve is that how creative thinking wutks in Mathematical Problem Solving (NIPS). “在数学问题解决活动中，创造性思维具有怎样的活动规律”，这是本文要解决的核心问题。
- The tiny povertystricken South Pacific state of Tonga has always had serious problems raising money, and so it has always been entrepreneurial. 小小的贫困交加南太平洋国家汤加一直有严重问题，筹集资金，因此它始终坚持自主创业。
- Goodwin believed he had discovered the solution to a famous mathematical problem which provably has no solution. 而在我看来，这份对科学的爱，也同样体现在各位松鼠以及各位松鼠之友的一言一行中。
- A mathematical problem usually requires a distinct answer, explanation or proof. 数学问题常常要求明确的答案、解释或证明。
- Don't ask me to solve mathematical problems; they are out of my grasp. 别叫我解数学题，数学题我理解不了。
- It is noteworthy that they found pleasure in many mathematical problems. 值得注意的是他们对许多数学问题兴趣很浓。
- It took him three hours to solve the mathematics problem. 他花了三个小时解答这道数学难题。
- Today's strong algorithms,which need to remain secret,pose a mathematical problem that is hard to solve without the correct key. 今天，强有力的算法必须保密，它提出的数学问题在没有正确的密钥情况下是难以解开的。
