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。
Talking about light, light is essential.
光，是非常必要的。
光是怎样的？
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。
Classic scientific ideas about light were changed by Einstein.
爱因斯坦改变了对于光的古典科学观念。
Today, I'm going to talk about light, and in particular about laser beams.
今天，我要谈一谈光，特别是镭射光。
I had to feel about in the dark for the light switch.
我得在黑暗中摸索寻找电灯开关。
You are right of course about the intense light associated with his daytime paintings.
当然，你是对的——强烈的光线与他白天的绘画有关。
The nearest star to earth is about 4 light years away.
地球离最近的恒星大约为4光年。
There was something strange about the flickering blue light.
那闪烁的蓝光有点儿奇怪。
Grandmother, I shall tell grandfather about it, and I am sure he can make it light for you.
奶奶，我要把这件事告诉爷爷，我相信他肯定会让您重新看见的。
My point here is that this is what light work is about.
此处我的观点是这就是光之工作的方式。
The light we emit is about 1000 times lower than the naked eye can see.
我们身体所发的光比肉眼能见的低1000倍。
You often wonder what light work is really about.
你们常常在想光之工作到底是怎样的。 传播光明或者为别人提供疗愈到底是什么意思？
Oh, I think I just went through a red light. Sorry about that.
哦，我想我刚才闯了一次红灯，对不起，我想你大约不应该把这也写进故事里。
The green ring structure near the center of the image is about 77 light-years across.
图片中间的绿色环状结构的跨度大概有77光年。
You'll never see the drunk driver that's about to run the red light.
你永远不会希望碰到一个醉酒的司机闯红灯。
At that distance, this image would be about 300 light-years across.
在那个距离，这张图约宽300光年。
Lessons about hope, strength, and the light within us that will not be extinguished.
这些有关希望、力量以及光明的课程，永远不会泯灭。
After turning off the light, give yourself about 15 minutes to fall asleep.
关灯之后给自己15分钟入睡。
The pair are about 31 million light-years distant.
这一对星系相距大约3千1百万光年。
The Oort Cloud is thought to extend about 1 light year from the Sun.
欧特云团距太阳1光年距离。
New facts about ancient China have recently come to light.
有关古代中国的史实最近已有新发现。
You said you joined "Light Tower Program", and what is that about?
你这里写参加“灯塔计划”，能解释一下这是什么计划吗？
He remained ambivalent for a long while about actual nature of light.
他在光的实际本性问题上犹豫过很久。
He remained ambivalent for a long while about actual nature of light.
他在光的实际本性问题上犹豫过很久。
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