1.
The air quality in the urban areas picked up gradually.
城市空气质量逐步提高。
2.
Exhaust gas has been incriminated as one of the causes of air pollution in cities.
废气被视为城市空气污染的原因之一。
3.
Exhaust gas has been incriminated in air pollution in cities.
废气已被视为城市空气污染的原因。
4.
Effects of meteorological conditions on air quality in Jinjiang,Fujian province
气象条件对晋江城市空气质量的影响
5.
Urban Air Quality in Key Environmental Protection Cities In the 47 key environmental protection cities, 19 of them have attained the Grade II standards for urban air quality.
环保重点城市空气质量47个环保重点城市中，19个城市环境空气质量达到空气质量二级标准。
6.
They not only pollute the air in cities, but make them crowded.
汽车不仅污染城市空气，而且使城市拥挤不堪。
7.
The air quality in 113 was worse than Grade III, accounting for 33.2%.
113个城市空气质量劣于三级，占统计城市数的33.2%。
8.
Compared with the previous year, the urban air quality remains unchanged.
与上年相比，城市空气质量基本持平。
9.
Percentage of Particulate Concentration Grades in Urban Air in 341 Cities
341个城市空气中颗粒物浓度分级比例
10.
Chaotic Characteristics of Urban Ambient SO_2 Concentration Time Series;
城市空气SO_2浓度时间序列的混沌特征
11.
Polluted air hangs over the city.
城市上空被污染的空气所笼罩。
12.
New York is the most serious air pollution city of America.
纽约市是美国空气污染最严重的城市.
13.
Newyork city is the most air-polluted city in the united states.
纽约市是美国空气污染最严重的城市。
14.
The exhaust fumes from factories polluted the air above the city.
从工厂排出的废气污染了城市上空的空气。
15.
The Influence of Urbanization on Air Temperature and Air Humidity in Chengde
承德市城市化对气温及空气湿度的影响
16.
the smoky atmosphere of an industrial town
工业城市中混有烟雾的空气
17.
Exhaust fumes from cars are poisoning the air of our cities.
汽车的废弃毒害我们城市的空气。
18.
City dwellers inhale foul air
城市居民吸进污浊的空气。