The proof is in your colour printer cartridges. They come in cyan, yellow and magenta, which are the true primary colours.
如果不信的话你可以去看看你打印机里的彩墨，它们一定是青色，黄色和品红色：真正的三基色。
Blue printer: One of the four printing plates in a subtractive colour process which is to be printed in cyan ink.
蓝版：减色彩印法的四张印版之一。它需用青蓝色墨印刷。
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