2.我是如何看见的？
章节大纲
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How does light affect the way we see the world?
::光如何影响我们看世界的方式？
I need light to see the world.
Where does light come from?
Light can come from many sources.
I can see objects that give off light.
::我需要光来看清世界。光从何而来？光有很多来源。我能看见发光的物体。
Some animals can make their own light.
The Sun provides the light that shines on Earth.
We also have things in our homes that give off light.
::有些动物可以自己发光。太阳提供照亮地球的光。我们家里也有发光的东西。
Why can I see objects that do not produce light?
Light bounces off some objects.
Light does not bounce off others.
When light bounces off objects, it is called reflection.
What causes colors?
Light seems white, but is really made up of all colors.
The color we see is the color of light that bounces off the
object.
All the other colors do not bounce off.
::为什么我能看到不发光的物体？光线从某些物体反射回来。光不会被其他光反射。当光从物体上反射时，它被称为反射。是什么导致了颜色？光看起来是白色的，但实际上是由各种颜色组成的。我们看到的颜色是物体反射的光的颜色。所有其他颜色都不会反射回去。
What happens to the colors of light that do not bounce off?
Some light gets absorbed.
It does not get reflected.
Other objects are clear.
Light passes through them.
::没有反射回来的光的颜色发生了什么？一些光被吸收了。它不会被反射。其他物体是清晰的。光穿过它们。
I need light to see.
I see things that make light.
I see things that light bounces off.
The light that bounces off enters my eyes.
::我需要光才能看见。我看到了发光的东西。我看到的东西会反射光线。反射回来的光进入了我的眼睛。
Without light, I could not see the world
::没有光，我就看不见世界
