数学难题

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math problem
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Mathematical problems
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Crux Mathematicorum
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mathematical difficulty
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短语

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英文数学难题
English Maths
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做出数学难题非常高兴
Make math problems very happy
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这数学题太难
That maths is too difficult ; This mathematical questions too difficult

1
她在做一道数学难题。
She is working at a difficult problem in mathematics.
《新英汉大辞典》
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另一组无助的孩子仅仅因为解决了简单的问题就得到了奖励，这样并没有提高他们解决数学难题的能力。
Another group of helpless children who were simply rewarded for their success on easier problems did not improve their ability to solve hard math problems.
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他把时间花在设计难以破解的数学难题上。
He spent his time devising incomprehensible mathematics puzzles.
《柯林斯英汉双解大词典》

数学难题
数学难题可以是指那些历经长时间而仍未有解答/完全解答的数学问题。古今以来，一些特意提出的数学难题有：平面几何三大难题、希尔伯特的23个问题、世界三大数学猜想、千禧年大奖难题等。

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