0 harmful substances in the air, often consisting of waste from vehicles or industry -- 空气污染
Diesel exhaust is a major contributor to air pollution. 柴油车辆排除的废气是空气污染的一大主因。
This study targeted automobile producers and electrical power companies as the culprits of many sources of air pollution.
He worked with public officials trying to reduce air pollution, the "smoke menace," by training janitors to burn coal more efficiently.
However, one important issue that was not considered in this study concerns indoor air pollution due to inefficient use of crop residues in rural households.
Most prior evidence relating plant size to pollution refers to water pollution, rather than air pollution, and compares medium with large plants.
The wellto-do could leave town for the clean air of the country or simply purchase gas masks to protect themselves from air pollution.
As the majority of countries are below their estimated peak levels for air pollutants, economic growth may not reduce air pollution or deforestation.
See also his history of water and air pollution.
This is crucial for policies to combat indoor air pollution.
