A second important area is monitoring the size of the hole in the ozone layer above Antarctica, since this is an indicator of global ultra-violet radiation levels.

第二个重方是检查南极洲上空臭氧层空洞大小，因为它标志着全球紫外线辐射水平。

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.

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

While this camera isn't a perfect measure of UV protection, it'll be able to show whether I get an even application or not.

虽然款相机检测紫外线防护性能并不完美，但它可以显示我防晒是否涂抹均匀了。

We have an -- The robot uses waves of ultraviolet light called UVC.

我们有——种机器人，使用是UVC紫外线波。

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

太阳紫外线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.

它通过吸收太阳两种紫外线辐射来保护每一个生物。

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

两种成分被用来帮助保护人们免受太阳紫外线灼伤。

However, that comes with the need to protect ourselves against those UV rays.

然而，是为了保护我们自己免受紫外线伤害。

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

主对绿光敏感细胞，主对紫外线敏感细胞。

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

它使用一种UVC紫外线进行消毒。

This is the ultraviolet band of the rainbow.

是彩虹紫外带。

Because the UV rays from the sun can damage your eyes.

因为太阳紫外线会损伤你眼睛。

The atmosphere is so thin, there is very little protection from ultraviolet radiation.

由于大气稀薄无法阻挡紫外线辐射。

A Lucky Lawn company, specializing in spray painting dried-out lawns, claims the paint is actually good for the grass because it protects the blades from harmful ultra-violet rays.

专门从事将干草坪刷色幸运草坪公司声称种油漆对草坪特别好，因为它能保护叶片免受有害紫外线照射。

What gives them their shape is the fact that fairly nearby there are some very, very massive, very luminous, very hot stars that are dumping out huge amounts of ultraviolet radiation. And it's sculpting the surroundings.

让柱子拥有如此外观是——离柱子非常近，质量极度巨大，极其明亮，也极其炙热许多恒星；些恒星释放出巨量紫外辐射，塑造出了它们周边景象。

And think about if you're someone who has a history of a melanoma, if you use an SPF 30, you're blocking out let's say 98% of the harmful rays.

想想看如果你是有黑色素瘤病史人，如果你用是防晒系数30防晒霜，假设有98%紫外线可以防护掉。

That's well into the stratosphere, the portion of the atmosphere that contains the ozone layer, which protects Earth from harmful ultraviolet rays, says study co-author Kane Stone, an atmospheric chemist at the Massachusetts Institute of Technology (MIT) in Cambridge.

该部分大气层被称为平流层，包含臭氧层，它保护球免受有害紫外线辐射，麻省理工学院（MIT）大气化学家、该研究合著者Kane Stone表示。

And just to look at the sheer numbers globally, they're just much larger pool of options that manufacturers can draw from, which helps the consumer because they're just more products out there, they're protecting a wider range of UV light.

仅从全球数目繁杂品类来看，紫外线防晒剂是制造商可以提取大部分选择，对消费者有益，因为它们可以有更多产品，它们保护着更大范围紫外线。

When it's bright and sunny like this, my eyes struggle to cope with the amount of UV light that's coming from the sun and is bouncing back up off the snow.

在样阳光明媚天气里，我眼睛很难承受来自太阳并从雪上反射回来大量紫外线。

Sunlight is composed of electromagnetic waves and is our primary source of ultraviolet radiation, which has a shorter wavelength than visible light and carries more energy.

太阳光是由电磁波组成，也是我们接收到紫外线主来源，它有相较可见光更短波长 也带有更多能量。