The discoloration on my wrist I keep telling you about.

我一直和你说的 手腕上异样的色斑。

This happens in a very colorful manner, and physicists like to call this iridescence or goniochromism.

这通色彩丰富，物理学家称其为彩虹色斑或者虹彩。

It’s actually a port-wine stain, a discoloration of the skin.

它实际上是一葡萄酒色斑， 一皮肤变色。

Not only is it gonna add just a really delightful little color speckle throughout it.

它不仅会在整个过程中添加一个非令人愉悦的小色斑。

Two spots of colour appeared in Jill’s cheeks.

【spot】吉尔的脸颊上了块色斑。

Now that we know what iridescence is, the next step is obviously to infuse our light simulation programs to have this awesome feature.

在，我们已经知道了什么是彩虹色斑，显然，下一步就是把这个酷炫的效果用光模拟程序展。

An even more less known fact is that quite a few birds, insects, minerals, sea shells, and even some fruits are iridescent as well.

比这个还要鲜有人知的事实是，许多鸟类、昆虫、矿物、贝类，甚至还有一些水果，都有彩虹色斑的效果。

And with this, it is now suddenly possible to put a thin iridescent film onto a virtual object and create a photorealistic image out of it.

有了这些小的微型结构，我们突然之间就可以把彩虹色斑薄膜加在虚拟物体上，制造真实的图像效果。

He didn't blend colours over large areas, but rather did short strokes of colour side by side, allowing the eye to mix those spots of color at a distance.

他并没有在大面积区域上混合颜色，而是将短笔触画在一起，让观者的眼睛在一定距离内混合这些色斑。

What is even less known, is that if we try to use a light simulation program to make an image with leather, we'll be surprised to see that it also shows a pronounced goniochromatic effect.

更加鲜为人知的是，如果我们尝试用光模拟程序模拟一张皮革制品的图像，我们会惊讶地发，这张图像也会显示明显的彩虹色斑效果。