But the higher the ozonelevel in a particular city, the more likely its residents were to die of lung disease.
然而,在一个特定的城市里,臭氧水平越高,居民死于肺病的可能性就越大。
2
The United States National Aeronautics and space administration a research satellite launched in 1991, running for 3 years to study atmospheric ozonelevel 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。
3
Ozone at ground level - not to be confused with the ozone layer in the upper atmosphere - is one of the major constituents of photochemical smog.