It was when he was reading about flying fish to his children that Haecheon Choi, a mechanical engineer at Seoul National University in South Korea, realised just how amazing these flying feats are.

崇海天是韩国首尔国立大学的机械工程师，当他向他的孩子朗读飞鱼的内容时，他突然意识到了飞鱼是一种多么神奇的生物。

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Eventually, papermakers were able to invent a variety of mechanical and chemical techniques engineer decent-quality paper out of pulped wood, a supply that (unlike cloth rags) appeared limitless.

造纸者最终发明出了多种机械、化学技术，利用木浆生产出了质地优良的纸张，原料供应(和破布不同)无限扩大。

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The mechanical engineer designs a solution to these problems for a fee corresponding to the amount of money the client expects to save by having a new, more efficient solution.

机械工程师为这些问题设计新的、更高效的解决方案，获得的酬金相当于客户采用这一方案有望节省的金额。

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After I graduate, I'll try to get a job, you know, as a mechanical engineer.

我毕业后想先找工作，成为一名机械工程师。

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"I'm not a mechanical engineer, but I saw a way to increase output of the machine by about 50%, " he says.

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