n.黑色；阴险
The idea of switching from the texture to blackness is very straightforward but the real trick is in getting the colors to change based on how the surface is illuminated. 从纹理到黑色的切换的概念是非常直接了当的，但真正地技巧是，在获得颜色中来改变基于表面是如何被照亮的。
