英语翻译While the exact nature of electricity is unkown,a great

英语翻译
While the exact nature of electricity is unkown,a great deal is known about what it can do.By the mere closing of a switch,buildings are lighted,wheels are turned,ice is made,food is cooked,distant voices are heard,and countless other tasks—ordinary and extraordinary—are performed.Although a great number of uses for electricity have been discovered and applied,the field is by no means exhausted.Electric machines and devices that have been in use for many years are being improved and are now finding wider fields of application.Extensive research is constantly bringing forth and developing new devices.Much is still to be learned about electricity.
Electricity is a convenient form of energy.It is well known that when fuels such as coal,oil,and gas are burned,energy is released.A waterfall,whether it is man-made or natural,also possesses energy.Yet,to be of value,this energy must be made available at points where it can be used conveniently.Electricity furnishes the most practicable and convenient means yet devised for doing this.The energy of burning fuel or of falling water is changed to a more convenient form—electricity—by electric machines.It is transmitted to distant points over electric circuits.It is controlled by other electric machines.At points where it is to be used,it is converted into useful work by still other electric machines and devices.

电的本质是什么是未知的,但我们却知道它用处多多.也许只需轻轻闭合电闸就可点亮高楼大厦,飞转车轮,制造冰块,烹饪食物,实现远距离通话,以及无数工作--或普通或特别---都可以完成.虽然有关电的发现和应用已经很多很多,但该领域还远没有枯竭.有关电的机械装置、设备已经应用了很多年,现在还在被提高、更新,而且电应用领域还在被进一步扩展.研究也越来越广泛,各种新装置不断的出现.当然,还有更多有关电的知识有待我们去学习.
电是一种便捷的能源.它跟煤炭、石油、天然气这些燃料一样为人所知,这些燃料在燃烧的同时,释放能量.无论是人工或者是自然形成的瀑布,其流动过程都蕴涵能量.当然了,从实际应用来说,这类能量需要恰当的方式转换才能方便应用.从这点上来说,电能是最实际、最方便、也是最切实可行的转化方式.燃料燃烧所释放的能量,水流所产生的能量都可以转变成另一种更便利的形式----电能----电机.电能通过电路可以实现远距离传输.也可以为其他电机所控制.总之,哪里有它的应用,它就可以用电机和其他设备形成生产力.