Combining red, green and blue LEDs to produce white light has the potential to be more efficient, and the colour of the light could be tuned depending on mood or taste.

结合红绿蓝led一起生成白光有能被更有效利用的潜在可能，并且光的颜色还可以依据心情或者口味来调配。

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Buy nightlights, alarm clocks, and other bedroom electronics that are illuminated with red light, which is less disturbing to melatonin production than white or blue light.

购买发红色光芒的夜光灯、闹钟和其它卧室电子设备，比起白色或蓝色灯源较少干扰n -乙酰- 5 -甲氧基色胺的产生。

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The thin, nanoscale wedges strongly absorb blue light at the tip and red light at the base.

这种薄的纳米尺度的楔子形状吸收能力强，顶部吸收蓝光，底部吸收红光。

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It's no use talking about the negative relationship between a red light and a green light and a yellow, white, or blue one because they all have the same value.

讲什么它是红灯，不是绿灯,不是黄灯白灯一点关系都没有,它们所代表的意义都一样。

耶鲁公开课 - 文学理论导论课程节选

But a clear, cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more easily than they do red light.

BBC: rainbow

At sunset, the sun appears red (the blue light has been scattered out of that image, too), so the cells of the eye that detect red are overloaded and incapable of registering weaker red signals.

ECONOMIST: In a flash

The show started with clothes in camel, black and gray but these immediately gave way to oversized leopard print sweaters, a short suit in traffic light red and a wispy blue dress with a cutaway hem that was paired with drainpipe trousers.

FORBES: NYFW Fall '13 Day 4: Victoria Beckham, DKNY, Diane Von Furstenberg, Tommy Hilfiger Women