| 1. | Bioassays on the skin, subcutaneous tissue, cervix, and trachea of experimental animals have shown that particulate matter of urban air can be carcinogenic in the intact animal .
对实验动物的皮肤、皮下组织、颈和气管的生物鉴定表明，城市空气中的颗粒物质对健康动物可能是致癌的。 |
| 2. | The air in china ' s major cities is thick with pollution
中国的大城市空气污染严重。 |
| 3. | Exposition of urban air pollution forecast methods
城市空气污染预报方法简述 |
| 4. | Exhaust gas has been incriminated in air pollution in cities
废气已过视为城市空气污染的原因。 |
| 5. | Air rights have value in many cities and can be sold
在许多城市空气使用权是有偿的并且可以出售。 |
| 6. | Lcq2 : comparison of air quality between hong kong and other cities
立法会二题：本港与其他城市空气质素比较 |
| 7. | Exhaust gases from boilers , vehicles , etc . , cause air pollution in cities
锅炉和车辆等排出的废气,污染城市空气 |
| 8. | It is urgent that the acute problem of air pollution in the city be solved
该城市空气污染这一严重问题亟须解决。 |
| 9. | It is an important reason that the automobiles let out the emissions
造成城市空气污染的重要原因之一就是汽车排放污染。 |
| 10. | According to experts ' analysis , more than 70 % of air pollution in cities results from [ is caused by ] autos
据专家分析，城市空气污染70 %以上是由汽车造成的。 |
