thinning of the ozone layer

Last week a team of researchers from Oregon State University offered a possible explanation: the thinning of the ozone layer.

上周，一队来自俄勒冈州立大学的研究人员提供了一个可能的解释：臭氧层愈来愈稀薄。

Scientists believe the sunburns are due to increasing levels of ultraviolet radiation resulting from the thinning ozone layer.

科学家们相信灼伤是因为臭氧层变薄，致使紫外线辐射等级增加而引起的。

The most troubling of the short-lived HFCs were invented to replace chlorofluorocarbons, refrigerants that were thinning the ozone layer in the upper atmosphere, and were also a major warming agent.

其中最短命的氢氟碳化合物，被发明取代氯氟烃，制冷剂可以稀释高层空气中的臭氧层，同时也是主要的升温剂。