In recent years, genetically engineered plants have been added to produce three more colors: dark red, yellow and white.

近年来，由于运用基因科技，作物也出现了三种以上的颜色：深红色、黄色和白色。

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The three primary colors are red, blue and yellow.

三种基色是红、蓝、黄。

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From the three colors red, blue and green, all other color sensations can be made.

从三基色红绿兰的组合之中可以使人感受到所有颜色。

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The watch's display comes in three natural colors -- we know red and green are on deck but the third remains a mystery (though blue seems a safe bet).

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Since red and green make brown, people with red-green blindness often have trouble telling the three colors apart.

WSJ: New Outlook for Colorblindness

The Crickett website features three different .22-caliber rifle models for kids, with shoulder stock colors ranging from pink to red, white and blue swirls.

CNN: 5-year-old Kentucky boy fatally shoots 2-year-old sister