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1·CFCs cause depletion of atmospheric ozone.

氟氯化碳会损耗大气臭氧。

2·Ozone sonde is widely used for in situ measurements of atmospheric ozone profiles from ground to 35 km.

臭氧探空仪是一种主要而又直接的探测大气臭氧垂直分布的技术手段。

3·The United States National Aeronautics and space administration a research satellite launched in 1991, running for 3 years to study atmospheric ozone level mission.

美国航空航天局1991年发射这颗研究卫星，执行为期3年研究大气臭氧水平的使命。

4·However, its harmful effect to the atmospheric ozone layer has been deeply concerned by the international society. Much research works have been done to seek for the substitutes of them.

但其对大气臭氧层的破坏作用，已引起了国际社会的高度重视，各国对其替代产品的研究做了大量的工作。

5·Analysis of the observational data, the TOMS total ozone, and NCEP circulation, shows that the atmospheric ozone amount experienced a high-low-high variation with low-high-low tropopause altitude.

分析大气监测资料、TOMS臭氧总量资料和NCEP大气环流资料表明，大气臭氧总量随着对流层顶的低一高一低变化呈高一低一高的变化过程。

6·The basic principle of atmospheric ozone layer destruction hy polyurethane blowing agent CFC-11, and various way, developmental trend and economic feature of substitution for CFC-11 were reviewed.

简述了CFC - 11对大气臭氧层破坏的基本原理，介绍了聚氨酯cfc - 11替代的不同途径及发展趋势，评价了CFC - 11替代的经济特性。

7·We reversed our first man-made global atmospheric crisis by banning chlorofluorocarbons -- by 2015, the Antarctic ozone hole will have shrunk by nearly 400, 000 square miles.

我们通过禁止含氯氟烃安然度过了第一次人为的全球大气危机——到2015年，南极臭氧空洞的面积将缩小近400,000平方英里。

8·Without the decisions taken 20 years ago, atmospheric levels of ozone-depleting substances would have increased tenfold by 2050.

如果没有20年前作出的那些决定，那么至2050年，大气中臭氧消耗物质的浓度会增加到原来的10倍。

9·Once photosynthesis had raised atmospheric oxygen levels high enough, the ozone layer formed, meaning that it was then possible for living things to venture onto the land.

一旦光合作用上升了大气氧气成水平足够高，臭氧层被形成，意味，它是然后可能为生存事冒险土地。

10·Volatile halocarbons are important atmospheric trace gases, which play significant roles in stratospheric ozone depletion and in the greenhouse effect.

挥发性卤代烃是大气中的痕量气体，对臭氧层损耗和温室效应有重要作用。