Usually at this time the yellow light just light up.

而通常此时黄灯才刚亮起。

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Take the best time before 9 in the morning and evening after 4, this time the best light, light hit the walls will show a charming golden yellow.

拍摄时间最好选在早上9点前和傍晚4点以后，这个时候光线最好，光线打在泥墙上会呈现出迷人的金黄色。

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It reflected blue light, with an occasional flash of yellow, and was seen naked eye by people after sunset at that time.

它反射蓝色的光，偶尔会变成黄色，并且在当时在日落之后肉眼都能看到。

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Lengthening yellow-light intervals, for example, gives motorists more time to hit the brakes.

WSJ: Hard to Put Red-Light Violations Under a Lens

It is an interesting triple "coincidence, " which probably evolved over time, that our eyes are most sensitive to yellow-green light, which happens to be the characteristic color of sunlight as well as the color that can most easily be transmitted through the Earth's atmosphere.

CNN: Why gamma-ray burst shocked scientists