When light comes, darkness goes away.
光来了，黑暗就逃跑了。
We see shapes when light hits an object.
当光照射到一个物体时，我们可以看到物体形状。
A gravitational lens is formed when light is bent by a massive object.
引力透镜现象就是光被巨大质量物体弯曲的现象。
When light is focused even more as a laser beam, it can cut through steel.
当光被集中成为雷射线时，连钢铁都能穿透切断。
When you write, you light a bonfire in the spirit world. It is dark there.
当你写作时，你点燃了一簇精神世界的篝火。那里很黑。
When it's dark, we may bump into things without the help of light.
当天黑时，我们可能会在没有光的情况下撞到东西。
They could sit in the shadow when the sun shed strong light and heat.
当太阳发出强烈的光和热时，他们可以坐在阴影里。
How glad he was when at last he caught the glimmer of a light!
当他终于看到一丝光亮时，他是多么高兴啊！
Please make the light go out when you go out.
你出去时，请把灯灭了。
I leave a light on when I'm out to discourage burglars.
我出门时开着灯以防夜盗闯入。
The traffic must stop when the red light is on.
当红灯亮时，车辆必须停下来。
Don't cross the street when the traffic light is red.
当交通灯是红色的时候，不要横过街道。
Sun glasses do much good to your eyes when the sun light is too strong.
当阳光很强的时候墨镜对你有好处。
When you make coleslaw or potato salad, use light or non-fat mayonnaise.
当你做凉拌卷心菜或者土豆沙拉时，用清淡或者无脂的蛋黄酱。
Can you see it when I open the shutter to let in the light?
如果我打开百叶窗，让光线进来，你能看见吗？
The traffic light tells us when to cross the road.
交通信号告诉我们何时穿越马路。
Fireflies give off flashes of light when they fly at night.
萤火虫夜间飞行时发出闪光。
When she turns the light on, there's no one there.
当她把灯打开后却发现一个人也没有。
The first thing to consider when decorating your small apartment is light.
灯可是你装修小型公寓时第一个要考虑的！
When he left, I turned off the light.
父亲离开后我关上了灯。
When the light is on, or white, the image is visible.
当在灯光下或白天，图像是可见的。
But I think people want to see the kid's face light up when they open their gift.
但是更认为能让孩子在打开礼物那一刻兴奋地嘴角上扬则是更令人开心的。
Light: When you're barefoot, you feel light, and you're not burdened by stuff.
轻松：当你赤脚时，你感到身外无物，一身轻松。
When a light passenger plane flew off course some time ago.
不久前，一架轻型客机偏离了航线。
But when he held his flash light to the house, it was already completely under water.
但是，当他举起了闪光灯照房子时，那房子已经完全浸入水中了。
Thus, they could sit in the shadow when the sun shed strong light and heat.
那样，他们可以在太阳散发强烈光热的时候坐在阴暗处了。
But when the light hits them they change to amber.
但是如果有光照在上面就会变成琥珀色。
Lightning triggers go off when there's any change in light source.
闪电触发器在光源有变化时会自动闪灭。
Lightning triggers go off when there's any change in light source.
闪电触发器在光源有变化时会自动闪灭。
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