So far, you've learned about the key components of every electrical circuit – namely voltage, resistance, and current.

到目前为止，您已经了解了任何电路的主要组件——即电压、电阻和电流。

Lit up like the " North Star" for Santa Claus, because on the foggiest nights with rain and snow " present" he could guide his sleigh by that " incandescent" display on Dasher, Dancer, Prancer, Vixen, " Socket" and " Circuit" and " Voltage" resistance.

像圣诞老人的“北极星”一样点亮吧，因为在有雨雪“存在”的雾蒙蒙的夜晚，他可以通过Dasher、Dancer、Prancer、Vixen、Socket、Circuit和Voltage带来的光亮指引他的雪橇。