在弗兰克·索看来，目前使用的大多数夜视设备装着一大堆电子元件，需要几千伏特的工作电压。 为了让画面更加逼真，夜视镜的镜头与镜头之间必须保持真空状态，因此整个装置比较沉重。
Most night vision devices today use massive amounts of electricity -- often several thousand volts, according to So -- and heavy, glass lenses that maintain a vacuum to make the night come alive.
把伏特表、安培表、欧姆表的功能集中在一个仪表内是比较方便的。
It is convenient to include the function of a voltage ammeter and ohmmeter within one instrument.
虽然收集到的数量会比较有限，但是几伏特的电压对一些小玩意来说已经够用了。
The amounts would be limited, but a few volts might be enough to power small gadgets.
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