四色墨：配制为一套，供四色彩印用的油墨，它们分别是青蓝，洋红，黄和黑。
Process inks: Cyan, magenta, yellow and black inks as a set of four for process colour printing.
三色彩印：用黄，洋红及青蓝而不加黑的彩色印刷方法。
Three-colour process: process work using the yellow, magenta and cyan without black.
洋红：减法原色之一。是四色彩印所用的颜色。亦称四色红。
Magenta: One of the subtractive primary colours. It is used in four-colour process printing. Also referred to as process red.
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