Satellite data revealed the vast extent of these losses and chemical tests confirmed that the cause was unquestionably CFCs.

卫星数据揭露了这些损失的具体程度，而化学测试证实，无疑是 CFC 导致的。

CFC 11 was supposed to have been phased out by 2010.

CFC 11本应在2010年前就被逐步淘汰。

Soon after, the world's largest CFC producer began to phase them out.

不久之后，这家全球最大的 CFC 生产商开始逐步淘汰氟氯化碳。

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

他们改用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”。

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

为了挽救臭氧层，很多制造商已停止生产使用氯氟烃的喷雾罐。

It is the second most common kind of CFC, short for chlorofluorocarbon.

它是第二种最常见的 CFC，是氯氟烃的简称。

But, by their estimates, it’ll still take at least 3 or 4 decades to get back to pre-CFC levels.

但是，根据他们的估计，至少还需要3或40年才能恢复到CFC之前的水平。

And see, it turns out these CFCs were a problem because they were destroying the ozone layer.

看， 事实证明这些氟氯化碳是一个问题，因为它们正在破坏臭氧层。

The US and UK, along with Canada, norway, sweden and Finland, lead calls for an international band from cfcs.

美国和英国 以及加拿大 挪威 瑞典和芬兰 带头呼吁建立一个禁止氟氯化碳的国际组织。

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。