妈妈说：“你知道电是什么吗？”

Mum said, 'Do you know what electricity is?'

youdao

你知道电可以改变人类饮食的方式吗？

Did you know electricity can alter the way we taste food?

youdao

你知道电的原理吗？

Do you know how it works?

youdao

噢，你家没有电！我现在知道你的电视是什么问题了！

Oh, you have no electricity?! I think I know what's wrong with your TV!

youdao

你知道过去没有电的时候，人们是怎么做的吗？

Grace, before electricity what did people used to do?

youdao

你知道什么是电音吗？

So what do you know about that?

youdao

根据指标的玩具让你知道这是电。

Indicator light on the toy lets you know it is powered up.

youdao

你知道是谁发现电吗？

Do you know who discovered electricity?

youdao

你知道是谁发现电吗？

Do you know who discovered electricity?

youdao