But there was a problem. The areas are not even connected to Kenya's electric power supply.

VOA: special.2009.02.16

So, this is what goes on in an electrolysis cell, and it works thanks to input energy from a power supply shown here.

所以，这是在一个电化学电池中发生的，它是靠输入的能量工作的,从和这个类似的电源输出的能量。

麻省理工公开课 - 固态化学导论课程节选

And these electrodes are then connected to a variable voltage power supply.

这些电极然后,和一个变压电源连接起来了。

麻省理工公开课 - 固态化学导论课程节选

The electricity comes from a small power supply placed under the skin in the chest.

VOA: special.2010.10.26

He's a literary power, a figure who could be called upon to supply the voice of tradition in itself.

他是一种文化力量，一个,可以随时用来声援传统文化的人物。

耶鲁公开课 - 弥尔顿课程节选