I think you all know what ultraviolet light is.

我想，你们都知道紫是什麽。

High up in the atmosphere, ultraviolet radiation transformed oxygen into ozone and gave Earth a vital shield — the ozone layer.

在大气层的高处，紫辐射将氧气转化为臭氧，为地球提供了一个至关重要的屏障——臭氧层。

Unlike humans, birds can see ultraviolet light.

与人类不同，鸟类可以看到紫。

And because of that, birds can also see ultraviolet light.

正因为如此，鸟类也能看到紫。

They're formed when ultraviolet light interacts with ethane you see.

它们是由于紫对乙烷的作用形成的，你看。

And some wear them for protection from ultraviolet rays.

有些人戴隐形眼镜是为了保护眼睛免受紫伤害。

Luo warned that individuals allergic to ultraviolet rays or those with dermatitis should avoid sunbathing.

说，对紫过敏或患有皮肤病的人应避免晒太阳。

Both of these ingredients are used to help protect people from the sun's ultraviolet rays but some scientists believe that when they wash off people's skin, they're harmful to marine ecosystems like coral reefs.

这两种成分都被用来保护人们免受太阳紫的伤害，但是一些科学家认为，当它们洗掉人们的皮肤时，对海洋生态系统如珊瑚礁是有害的。

They see everything in slow-mo, plus they can see ultraviolet light.

它们以慢镜头观察一切，而且它们还能看到紫。

Snow amplifies the ultraviolet rays of the sun and can damage the eyes.

雪会将紫放大，损害双眼。

The U.S. Environmental Protection Agency lists products containing ethyl alcohol and hydrogen peroxide as likely being effective cleaners but the race is on to see what else can do the trick, essential oils, candles, ultraviolet light.

美国环境保护署列出了含有乙醇和双氧水的产品，这些可能是有效的清洁剂，但目前还在寻找其他有效产品，精油、蜡烛、紫等。

The ultraviolet rays and the heat from the sun act together on the water.

太阳的紫和热量共同对水产生影响。

It protects every living thing by absorbing two types of ultraviolet radiation from the Sun.

它通过吸收太阳的两种紫辐射来保护每一个生物。

More than 90 percent of melanomas are caused by too much ultraviolet radiation.

90%以上的黑色素瘤是由过度暴露于紫辐射所引起的。

Both of these ingredients are used to help protect people from the sun's ultraviolet rays.

这两种成分被用来帮助保护人们免受太阳紫的灼伤。

These digital cameras can also be designed to detect ultraviolet light, infrared, and more.

数码相机还可以用来探测紫、红等。

With a powerful enough prism you can get all of the reds and all of the violets, all of the infinite colours between them and beyond them, in the infrared and the ultraviolet.

只要有一个足够强大的棱镜，你就可以看到所有的红色和所有的紫色，以及它们之间和它们之的所有无限的颜色，就在红和紫中。

Cells sensitive mainly to green light and cells sensitive mainly to ultraviolet light.

主要对绿光敏感的细胞，主要对紫敏感的细胞。

It is disinfecting using a form of ultraviolet light called UVC.

它使用一种叫做UVC的紫进行消毒。

The system uses a clear liquid that can only be seen under ultraviolet light.

该系统使用了一种只有在紫下才能看到的透明液体。