We don't think about that as often as we think about light pollution.

我们不像思考光污染那样经常思考这个问题。

youdao

What about light?

光是怎样的？

youdao

A good way to think about light is to pretend that it's water.

一个很好的方法是把光想成水。

youdao

"Now,if you're on a star about 1,000 light years away, you see earth as it was 1,000 years ago.

VOA: standard.2010.04.16

So, we'll take a little bit of a step back after we introduce quantum mechanics, and talk about light as a wave, and the characteristic of waves, and then light as a particle. And one example of this is in the photoelectric effect.

等我们介绍完量子力学后,我们要回过头来讨论下光,作为一种波和它的波动性特征,以及光作为一种粒子,其中的一个粒子就是光电效应。

麻省理工公开课 - 化学原理课程节选

I mean, there is an emptying out of positive meaning in the very awareness that, after all, the red light could mean "go" I'm about to go on and give more examples.

这就事我们不能主动赋予符号意义,但是是要认识到，红灯也有表示，出发，的意思“,我会用更多例子来说明它。

耶鲁公开课 - 文学理论导论课程节选

It might learn about light and the wavelengths of light and translate those concepts completely differently than we do.

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