三天前，我们客厅的灯突然熄灭了。

Three days ago, the light in our living room suddenly went out.

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为什么交通灯是红、黄、绿三种颜色的？

Why traffic lights are red, yellow and green？

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第三盏闪光灯 SB-80DX 充当发灯。为了获得更柔和的光线，我使用了热靴灯柔光箱套装。

The third Speedlight SB-80DX acted as hair light. To get a softer light, I used Speedlight Pro Kit Softbox.

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These three lights with their respective colors just do positively mean these things.

三种颜色的灯和它们各自的颜色,自然的有各自表达的意思。

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。

耶鲁公开课 - 文学理论导论课程节选