一旦所有三个开关打开(按顺序)的主灯将发光红色。

Once all three switches are turned on (in order) the Main light will glow red.

youdao

室内沿着屋脊的一条主灯带则为生活空间提供稳定的光源。

A single rooflight, running the length of the main roof's ridge provides steady ambient light to the living Spaces.

youdao

拍摄时的主光是Arri钨丝灯，摄影师没有使用电影摄影师经常使用的菲涅耳镜头。

His main lights were Arri tungstens, without the Fresnel lenses that cinematographers often use as broad spots.

youdao

I of course picked the wrong day to wear a sweatshirt under really hot lights so thankfully I came prepared with another item from the-- from the store.

当然，我在主光灯下穿了件运动衫，这确实不太明智,幸好我过来时,从商店准备了另一件。

哈佛公开课 - 计算机科学课程节选