The 1987 Montreal Protocol phased out the use of chlorofluorocarbons, or CFCs, responsible.

分阶段撤销氯碳化物、氟氯碳化物、以及其他一些会对臭氧造成破坏物质。

The biggest problem was chlorine from a man-made compound called Chlorofluorocarbons, or CFCs.

最大问题是来自人造化合物含氯氟烃中氯（CFC）。

Because CFCs are also powerful greenhouse gases.

因为氟氯碳化物是强大温室气体。

On the ground, CFCs aren't harmful.

在地面上，CFC 是无害。

And back then we used a lot of CFCs.

那时我们了很多 CFC。

Because CFCs are also greenhouse gases.

因为氯氟烃是温室气体。

CFCs could hang around in a planet's atmosphere for a long time.

氯氟烃会在一颗行星大气停留很长一段时间。

They have switched to other less harmful chemicals, and labelled their cans 'ozone-friendly' or 'no CFCs'.

他们改其他毒性较小化学品，并在罐子上贴上了这样标签：“破坏臭氧”“含氯氟烃”。

To help save the ozone layer, many manufacturers have stopped producing aerosol cans that use CFCs.

为了挽救臭氧，很多制造商已停止生产氯氟烃喷雾罐。

NASA's James Webb Space Telescope, due to launch in 2018, should be powerful enough to detect chlorofluorocarbons, CFCs.

将于2018年发射美国宇航局詹姆斯韦伯太空望远镜应该强大到足以检测氯氟化碳, 氯氟烃。

The US had already moved away from CFCs in aerosol cans.

美国已经再 CFC 气溶胶罐了。

CFCs were developed in the 1920s by three US-based corporations as coolants for refrigerators.

CFC 是在 1920 年代由三个美国公司开发于冰箱冷却剂。

This refrigerant is said to be less harmful to the environment than older cooling chemicals known as chlorofluorocarbons (CFCs).

据说，这种制冷剂对环境危害小于被称为氯氟烃(CFCs)较老冷却化学品。

However, more and more manufacturers are now producing refrigerators and air conditioners that do not use CFCs.

然而，越来越多制造商现在在生产氯氟烃电冰箱和空调。

While generally less potent than CFCs, HFCs still trap more heat than carbon dioxide and are contributing to climate change.

虽然通常及 CFC，HFC 仍然较二氧化碳留住更多热量并且正在加剧气候变化。

The cost of helping developing countries phase out CFCs under the Montreal protocol was just 2.4 billion all-told from 1990-2010.

1990-2010年间，德国根据蒙特利尔议定书，帮助发展中国家逐步淘汰氟氯碳化物总成本仅24亿美元。

In the lower atmosphere, CFCs don't break down or react with other molecules.

在低大气中，CFC 会分解与其他分子发生反应。

CFCs soon found their way into a variety of everyday items and became a multi-billion dollar per year industry.

CFC 很快就被加入各种日常品中并成为了一个年收益数十亿美元产业。

Initial estimates showed that within 60 years, CFCs could reduce ozone concentrations by 7%.

初步估计表明在 60 年内，CFC 可臭氧浓度降低 7%。

The two chemists discovered that chlorofluorocarbons, or CFCs, from air conditioners and canisters of hair spray could destroy the ozone layer.

这两位化学家发现空调和罐装发胶中CFCs，即氯氟烃可以破坏臭氧。