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The nightmare of your mobile phone running out of power mid-conversation could be over, for researchers at the University of Wisconsin have invented a device that, placed in a shoe, can harvest the kinetic energy from walking to power a mobile phone.
通话时遭遇手机突然没电的经历或许就要成为历史。因为美国威斯康星大学的研究人员研发了一种可以嵌入鞋子的装置，可从行走中获取动能从而为手机充电。
Scientists have been working for years on trying to harness the energy produced from walking, which theoretically is sufficient to power a light bulb, smart phone or even a laptop.
为了利用人们在走路过程中所产生的能量，科学家们已经探索了好多年。理论上讲，这种能量足以满足灯泡、智能手机甚至是一部笔记本电脑的工作需要。
But until now their solutions have been too cumbersome, or have not produced enough power to be useful.
但是直到现在，他们的方案都太过繁琐，或者难以产生足够的可以使用的能量。
Now, engineering experts Tom Krupenkin and Ashley Taylor say they have come up with a technology which can produce as much as a hefty 10 watts of power.
如今，工程专家汤姆•克鲁本勤和艾希莉•泰勒表示，他们已经研发了一项技术，可以产生高达10瓦的能量。
