Color four squares into red, yellow, blue or green.

给四个正方形涂色：红色、黄色、蓝色或绿色。

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An example is an MP3 player that has red, green, and blue variants.

一个例子就是具有红色、绿色和蓝色等不同颜色的MP3播放器。

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Suddenly the atmosphere grew as blue again as before; the forest grew red, and green, and yellow-colored.

突然，天空又变得和以前一样蓝了。森林变成了红色、绿色和黄色。

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One is that there's four different colors and so you can see red, blue, yellow, green here - four different colors and that's all there are, there aren't more than four.

一是这些梯阶有四种不同颜色,你可以看到红 蓝 黄 绿,恰恰只有四种不同颜色,不多不少

耶鲁公开课 - 生物医学工程探索课程节选

By adapting the technology to 1-by-1-foot modules--each containing 16 rows and columns of red, blue and green pixels--that could be loaded on to circuit boards, Daktronics could finally compete in the same ballpark as Sony and Mitsubishi, offering a video-ready scoreboard.

FORBES: Bright, Very Bright

Using a specialized sub-pixel signal processing for Sharp's red-green-blue-yellow Quattron pixel panel, the next genesis of Quattron will allow the control and use of these colors individually, enabling the reproduction of double resolution in one singular pixel.

ENGADGET: Sharp AQUOS Ultra HD, 1080p HDTVs eyes-on HD

Red, white and blue -- red, white and green.

NPR: Coordinating Flags at Immigration Marches