These are different colour models, where RGB is “additive” meaning the mixing of different lights of colour create new colours-while the other two are “subtractive” models and absorb different wavelengths of light.

这些是不同的颜色模型，其中红绿蓝三原色是“相加模型”，它意味着不同颜色光的混合创造新颜色，而另外两个是“相减模型”并且吸收不同波长的光。