In the simple diagram below, we can see that the light source is coming from the left.
下图中，光源来自左方。
As you can see, the light source is located directly above the character in the fantasy painting, and from the sky, left on the painting with the window.
正如你所看到的，光源位于上方的幻想画中人物，是来自天空的，画中窗口的光是向左的。
If I can see the light source, I usually make sure to leave a mark here on a separate layer as a point of reference.
如果我能看到光源，我通常一定要在一个单独图层上留个记号作为层参考点。
You can't even see the source of the light that shines through. You can't tell if the light is from an artificial source or from the sun.
你不可以透过它看见树或人，连透射进来的光线源头也看不见，你不知道那光线是人工的，抑或是天然的阳光。
From the experiment we can see that the response velocity of the light source is quite quick and it can replace tunable laser diode completely in some experiment system.
通过实验验证，该光源响应速度快，在部分场合已完全能替代可调谐激光器。
You will see by doing so it created some colour variation and we now have a light source coming from the top right.
你会看到这样做带来了一些颜色的变化，现在我们有一个光源来自右上角。
You will see by doing so it created some colour variation and we now have a light source coming from the top right.
你会看到这样做带来了一些颜色的变化，现在我们有一个光源来自右上角。
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