Day Light, Night Light

Day Light, Night Light

光从哪里来

In the morning when you wake up, there is sunlight. Maybe it's cloudy and you can't see the sun. But it really is shining. If you were flying above the clouds, you could see the sun. In the daytime there is light. That's because the sun is shining on your part of the Earth.

早上醒来，你看到阳光照进屋里。如果是阴天，你就看不到太阳，可它依然在发光。假如你能飞到云层上面,就可以看到光芒四射的太阳了。白天有光,因为太阳正照耀着地球上你住的这一边。

Even at night when you go to bed, there is light. There may be bright moonlight. Even if the moon isn't out, there may be light from the street, or from cars or other houses.

晚上,甚至在你该上床睡觉的时候,也有光。那也许是明亮的月光。即使月亮没有出来，街道上、小汽车或其他房子里也会有光射出来。

There is light around you all the time. When it's dark inside, you turn on a light. When it's dark outside, the streetlights come on. Or you turn on a flashlight. Even when all these lights are off, there is still some light. It's hard to find a place that is really dark.

光时时刻刻围绕着你。屋里黑了，你会开灯。屋外黑了，街灯会亮起来，或者你会打开 手电筒。即使这些光都没了，还会有其他的光。你很难找到一个真正黑暗的地方。

Sunlight comes from the sun. The sun is very hot. It sends out light to us. Starlight comes from the stars. The stars are also very hot. They send out light to us.

日光来自太阳。太阳非常热，它为我们发光。 星光来自恒星。恒星也非常热，它们也给我们送来光明。

Light comes from things that are very hot. The flame of a candle is hot. The little bulb in a flashlight is hot. And the big bulb in a lamp is hot. We call these hot things light sources, because light comes from them. Hot things make light.

光来自那些非常热的东西。蜡烛的火焰是热的,手电筒里的小灯泡是热的,灯罩里的大灯泡也是热的。我们把这些发热的东西叫做光源,因为光就从那里来、非常热的东西会发光。