translation.en: And by looking at how the different color channels of the illumination, the red and the green and the blue, diffuse the light differently, we can come up with a way of shading the skin on the computer.
translation.zh: 通过颜色和亮度不同的通道， 红绿蓝色彩通道 受光照不同的漫反射 我们可以通过计算机总结出为皮肤添加阴影的方式。