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

地球周围有一种很特别的氧，名为“臭氧”（O3）。

The ozone hole had been growing for decades over Antarctica.

几十来，南极洲上空的臭氧层空洞在不断扩大。

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

其他气溶胶可以主导伤害臭氧层的化学反应。

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

接下来，一个干式滚筒利用臭氧使牛仔裤褪色。

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

这意味着臭氧层空洞的大小每在改变。”

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、臭氧层耗竭这些问题息息相关。

Rocket engine exhaust contains gases and particles that can affect Earth's climate and ozone layer.

火箭发动机的尾气中含有能影响地球气候和臭氧层的气体和颗粒物。

The hole in the ozone layer is getting smaller.

臭氧层的空洞正越来越小。

The UN now predicts the ozone layer will return to its 1980 level by 2066.

目前联合国预测， 2066 ，臭氧层将恢 1980 的水平。

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

“臭氧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.

而其与臭氧发生反应，将其消除，远超过臭氧再生的速率。

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

臭氧层的消失导致全球气温升高，引发龙卷风，海啸和飓风。

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

一种导致臭氧层空洞的化学物质重新出现。

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

氧气组成的臭氧层使人免受紫外线伤害。

" were likely driving the observed increase of ozone in the Northern Hemisphere" .

" 可能使在北半球所观察的臭氧含量增加。"

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

地表臭氧和颗粒污染物是人类健康的最大威胁。

However, the study said the ozone layer is improving.

然而，该研究称，臭氧层正在改善。

These do not harm the ozone layer and are more energy efficient.

它们不会损害臭氧层，而且更节能。

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

地球周边空气所含的臭氧对人类有害。

The ozone layer is becoming very thin and letting too many dangerous rays reach us.

臭氧层变薄，人类会遭许多危险射线侵扰。