5.In l988，Professor Richard Muller and colleagues made the first operating micromotor，which was 100 microns across，or about the thickness of a human hair.In 2003，Zettls group created the first nanoscale motor.In 2006，they built a nanoeonveyor，which moves tiny particles along like cars in a factor。v.

　　6.Nanoteehnology engineers try to mimic nature。building things atombyatom.Among other things，nanomotors could be used in optical circuits to redirect light，a process called optical switchin9。Futurists envision a day when

　　nanomachines，powered by nanomotors，travel inside yur body to find disease and reFair damaged cells.

　　词汇：

　　shuffle v.来回运动 nanometer n.纳米，毫微米

　　molten adj.熔化的 micromotor n.微电机

　　droplet n.小滴 nanotube n.纳米管

　　Nanoconveyor n.纳米传送带 nanotechnology n.纳米技术

　　bump v.碰撞 mimic v.模仿

　　sop v.吸入 suoke n.行程，冲程

　　microwatt n.微瓦 nanomotor n.纳米发动机

　　nanomachine n.纳米机器

　　注释：

　　1.Power stroke：动力行程

　　2.at Small scales：在小等级上。这里指的是在纳米等级上。

　　3.it is quite impressive in relation to the tiny scale of the motor：与电动机的小等级相比，功率是相当可观了。In relation to是与相比。如：

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