20.never hang anything over or near an electric bulb.

不要把东西挂在灯或灯附近。

Thanks. Have you got any light bulbs?

谢谢。有照明灯吗？

This one's going to-- let me switch colors arbitrarily-- this one's going to stay on.

这个灯会是.... 先随意换种颜色这个灯还会亮着。

That's in favor of LED bulbs lasting 25 to 50 times longer.

这是为了支持使用寿命比传统灯长25到50倍的LED灯。

And that's if you had a lightbulb.

如果你有灯的话。

In this question, we're talking about any light bulb not one specific light bulb.

在这个问题中，们谈论的是任何一个灯，而不是一个特定的灯。

That comes from the power of your lamp's magic light bulb!

这来自神奇灯的力量！

Take the case of the humble light bulb.

举个谦卑的电灯的例子。

And I also try to use energy-efficient bulbs.

试着用节能灯。

But the heat from the bulb brings the magic!

但灯的热量带来了魔法！

Number 10, it's like a light bulb.

第十 这就像一个灯。

Now, what if we didn't have those?

那么，如果们没有灯呢？

It takes a hundred watts to light a bulb.

一个灯需要100瓦的电。

I remember when people used big ones.

记得以前都用大灯。

At least the slides were good, that is, until the bulb in the projector blew.

至少幻灯片还不错，直到投影仪的灯爆了。

Or a lightbulb whose glow provided its own electricity.

或者一个发光的灯自己提供电力。

See how the bulb is cracked at its base?

这会使灯因散热不均而发烫？

Consider this average light bulb which consumes roughly 100 watts.

请注意，这个灯平均耗电才约100瓦。

There were ten and I bought one of them.

有十个灯，买了其中一个。

Your mom's all over me to change a bunch of lightbulbs.

你妈妈有好多灯要换呢。