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层造成破坏的物质的使。

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

美国已经不再使 CFC 的气溶胶罐了。

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

CFC 是在 1920 代由三个美国公司开发的箱的冷却剂。

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

氯氟烃会在一颗行星的大气层停留很长一段时间。

Because CFCs are also powerful greenhouse gases.

因氟氯碳化物是强大的温室气体。

Durwood Zaelke of the Institute for Governance and Sustainable Development, a think-tank, says that if CFCs were uncontrolled the annual figure would be 8 billion tonnes higher.

“治理和可持续发展智库”的Durwood Zaelke表示，如果氟氯化碳的排放未受控制，会多排放80亿吨。

So, in the 1980s, manufacturers gradually stopped using CFCs and replaced them with hydroflurocarbons or HFCs, which are similar to CFCs, but don't contain chlorine.

因此，在20世纪80代，制造商逐渐停止使氟氯化碳，取而代之的是氢氟碳化合物或氢氟碳烃，它们与氟氯化碳类似，但不含氯。

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

据说，这种制冷剂对环境的危害小被称氯氟烃(CFCs)的较老的冷却化学品。

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

在低层大气中，CFC 不会分解或与其他分子发生反应。

Because CFCs are also greenhouse gases.

因氯氟烃也是温室气体。

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的化学品，并在罐子上贴上了这样的标签：“不破坏臭氧层”或“不含氯氟烃”。

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的CFCs，即氯氟烃可以破坏臭氧层。

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

最大的问题是来自人造化合物含氯氟烃中的氯（CFC）。

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

将2018发射的美国宇航局的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。

And back then we used a lot of CFCs.

那时我们了很多 CFC。

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

了挽救臭氧层，很多制造商已停止生产使氯氟烃的喷雾罐。

And even then, the planet would have to orbit a special kind of star, a white dwarf, for the CFCs to show up.

即使如此, 环绕白矮星运行类地行星上的含氯氟烃指数成了科学家们研究的对象。

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

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

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

然而，越来越多的制造商现在在生产不使氯氟烃的电箱和空调。

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了一个收益数十亿美元的产业。