器具，工具用来进行或促进手工或机械工作的器具，例如锯子 a devilish problem to solve极难解决的问题 a devotee of the theater戏迷a devotee of the ballet芭蕾舞爱好者 ..
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极难解决的麻烦或问题 Augean stables
极难解决的问题
A very difficult problem to solve
以上为机器翻译结果，长、整句建议使用 人工翻译 。
这是个极难解决的问题。
This is the question which extremely difficult to solve.
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推理统计学是一套已定形了的方法体系，它解决的是光凭人脑极难解决的另一类问题。
Inferential statistics is a formalized body of methods for solving another class of problems that present great difficulties for the unaided human mind.
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