The ozone hole had been growing for decades over Antarctica.

几十年来，南极洲上空的层空洞在不断扩大。

Next, a dryer-like tumbler uses ozone to fade jeans.

接下来，一个干式滚筒利用使牛仔裤褪色。

Around the earth, there's a special kind of oxygen call " ozone" (O3).

地球周围有一种很特别的，名为“”（O3）。

Other aerosols can host chemical reactions that damage the ozone layer.

其他气溶胶可以害层的化学反应。

However, the study said the ozone layer is improving.

然而，该研究称，层正在改善。

This means the size of the ozone hole changes year on year.

这意味着层空洞的大小每年都在改变。”

Earth's protective ozone layer 'on track' to recover by 2066.

地球的保护层“有望”在 2066 年之前恢复。

But closer to Earth's surface, ozone is a common pollutant.

但更靠近地球表面的话，就会是一种常见的污染物。

Near Earth, ozone in the air is a danger to life.

地球周边空气所含的对人类有害。

It would be enough to totally destroy the Earth's ozone layer.

这足以彻底摧毁地球的层。

" … hole in the ozone shield is the size of the continental United States."

“层上的空洞有美国大陆那么大。”

These then react with ozone, destroying it faster than it can be replenished.

而其与发生反应，将其消除，远超过再生的速率。

Ground level ozone and particle pollution are the greatest threat to human health.

地表和颗粒污染物是人类健康的最大威胁。

" The protective ozone layer is being threatened as never before."

“具有保护作用的层正受到前所未有的威胁。”

A chemical that helped to create a hole in the ozone layer is reappearing.

一种致层空洞的化学物质重新出现。

The disappearing ozone layer causes increased temperatures around the world, triggering cyclones, tsunamis and hurricanes.

层的消失致全球气温升高，引发龙卷风，海啸和飓风。

The ozone layer, our protection against the sun's UV rays, is made of oxygen.

气组成的层使人免受紫外线害。

An international report says human action to save the ozone layer appears to have worked.

一份国际报告称，人类拯救层的行动似乎奏效了。

A new United Nations report says the Earth's ozone layer appears to be healing.

联合国的一份新报告显示，地球的层似乎正在愈合。

It's linked to global warming, acid rain, effects on wildlife, depletion of the ozone layer.

空气污染和全球变暖、酸雨、野生动物保护、层耗竭这些问题息息相关。