Should I slow down at a redlight, a green light, or a yellow light?
我应该在红灯时、绿灯时还是黄灯时减速呢?
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A quantum-dot display would work by arranging quantum dots that emit red, green and blue light in a grid-like pattern, and getting those dots to emit light directly.
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.