That's because the red light is actually not a gross constituent unit in a semiotic system, right?

那是因为红灯不是这一符号系统的一个主要组成单元，对吗？

youdao

Like a rainbow, its daylight equivalent, a moonbow is produced when light is broken up into its constituent colours as it passes through water droplets.

月虹与白天出现的彩虹一样，是光通过水滴分解成多种色光后产生的，而光本身是由多种色光组成的。

youdao

Each constituent of the tissue, such as capillaries, glands and collagen, will scatter light or absorb light in different ways.

细胞组织的每一个成分，例如毛细血管、腺和骨胶原，都以不同的方式散射光或吸收光。

youdao

With followup spectroscopic measurements that broke up the light into its constituent wavelengths, the astronomers identified one very faraway galaxy.

MSN: Newfound galaxy may be most distant ever seen

The reason Bose-Einstein condensates may prove useful outside the laboratory is that they are to matter what a laser is to light: all their constituent particles march in step.

ECONOMIST: A new way has been devised to make a peculiar form of matter