Santa Fe is one of only 20 U.S. cities the ALA looked at with consistently safe ozone levels. (While the atmosphere’s ozone protects us from the sun’s rays, ground-level ozone is a pollutant.)
圣达菲是美国汽车法律协会(ALA)观察的臭氧水平一贯在安全范围的20个城市中唯一的一个。(大气层中的臭氧保护我们免受阳光的辐射,而地面的臭氧是一种污染物。)
Bismarck, N.D.
Population: 106,286
北达科他州俾斯麦
人口:10 6286
Bismarck has some of the lowest year-round particulate levels of all U.S. cities (it comes in at number 11) and ozone levels below what is considered dangerous.
俾斯麦是美国所有整年微粒物质水平最低的城市之一,而且该城市的臭氧含量也属于安全水平。
North Dakota’s capital is protected from pollutants due to a relatively remote location and the fact that it’s not downwind of other cities. Although its winters make it one of the coldest U.S. cities, the low temperatures keep ozone at bay.
北达科他州首府不受污染物的破坏是由于它相对偏远的位置,还有它不处于其它城市的下风区的事实。尽管这样使它冬天成为美国最冷的城市,但是低温也预防臭氧的危害。
Its citizens care also helped establish the Bismarck Tobacco Free Coalition to promote a smoke-free environment.
【美国空气最清新的城市】相关文章:
最新
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15
2020-09-15