这个白色的像个砖块似的玩意比一般的交流电压适配器稍大点，任何地方都可以放得下。
The device is a small white brick-just a little bigger than a regular AC adapter-that can fit just about anywhere.
开关接通，1,000伏特的交流电猛击凯姆勒。
The switch was thrown, and 1,000 volts of AC slammed into Kemmler.
选择交流电作为工业标准的原因很简单，在早期供电距离很短的电网里，交流电的损耗比直流电小。
The reason was that over the short distances spanned by early power grids, AC transmission suffers lower losses than DC. It thus became the industry standard.
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