Did you encounter any situations last year that could have been prevented or less painful if you had a better handle on how to attack the problem?
您去年是否遇到过任何这样的情形：如果更好地了解如何攻克问题的话，原本可以防止问题或者使问题不那么棘手？
A student who learns to handle Numbers mentally can focus on how to attack a problem and then complete the actual calculations easily.
学会心算的学生能把注意力集中到如何解题上，然后轻而易举地完成实际运算。
No amount of improvement in computer hardware will ever make such a problem tractable. The only hope is an enormous, and unlikely, conceptual breakthrough in how to attack the question.
计算机硬件方面再多的改进也不足以解决这个问题，只能寄希望于庞大的，不大可能的关于如何解决问题的概念性突破。
Linear cryptanalysis with multiple approximations is a generalization of linear cryptanalysis, and how to attack DES efficiently by multiple linear cryptanalysis method is still a problem.
多重线性密码分析是线性密码分析方法的一种推广，如何利用多重线性密码分析方法来攻击DES一直是人们关注的焦点。
Linear cryptanalysis with multiple approximations is a generalization of linear cryptanalysis, and how to attack DES efficiently by multiple linear cryptanalysis method is still a problem.
多重线性密码分析是线性密码分析方法的一种推广，如何利用多重线性密码分析方法来攻击DES一直是人们关注的焦点。
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