So, he showed that the lightning radiates an electric field which produces a voltage on the frog legs.

他证明了闪电能辐射出一个电场，在青蛙腿上产生电压。

And a capacitor, if you put a voltage on the capacitor, it takes some time for it to ramp up and actually pull the charges into the capacitor to fill it up.

还有一个电容器，如果你在电容器上施加电压，它需要一些时间才能上升并实际将电荷拉入电容器以充满它。