Should I slow down at a red light, 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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When Wang Jie described Li's red apple as being green, Li realized that Wang Jie must have run a red light.

当王杰说李警官的红苹果是绿色的时，李警官意识到王杰一定是闯红灯了。

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Human eyes have three cone cell types, with each type dedicated to receiving either blue, green or red light.

人类拥有三种视锥细胞，每种细胞都有各自的用途，可用于接收蓝色光、绿色光或红色光。

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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

Now in a stoplight, it only has three, one is tempted to say, variables plainly differing from each other: red, yellow and green we have two ways of thinking about the red light.

交通灯，三种灯，红黄绿，它们的颜色和彼此不能,我们有两种方式认识红灯的意思。

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One such project is called NewsFlash, and uses high-frequency red and green light to transmit data to the built-in camera on a receiving device -- in this case Samsung's Epic 4G.

ENGADGET: NewsFlash uses high-frequency light to transmit data from iPad to smartphone, we go hands-on (video)

"We want a red light or a green light from the government, " on whether to hire an employee, Quinn said.

CNN: Review of airport security firm shows security breaches continue

When a GPS-equipped bus approaches an intersection, it can, as before, take over the intersection's traffic light, but the computer can also calculate its expected time of arrival and decide either to extend a green light or shorten a red light.

FORBES: Greening the Traffic Lights