The challenge themselves, to break through the limit, hard work, the courage to open up.
挑战自我，突破极限，奋发拼搏，勇于开拓。
Modified gear can break through the limit of spur gear in using. But modified gear must be manufactured with special design tools in some conditions.
变位齿轮可以有效突破标准渐开线齿轮存在的使用局限性，但在某些情况下必须采用专门设计的刀具加工。
The empiricism denies that human beings have the ability to break through the limit of the sense organ, and advocates that human beings' understanding can't go beyond their own experience.
经验主义否认人类有能力突破感官的限制，主张人的认识只能封闭在自身的感觉经验之中。
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