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- 世界没有不遭空气污染的地方，我们必须采取措施加以控制。
No area in the world is completely free of air pollution. We must take measures to control it.
- 废气已过视为城市空气污染的原因。
Exhaust gas has been incriminated in air pollution in cities.
- 我们应该使用无烟煤以防止空气污染。
We should use anthracite to avoid air pollution.
- 这些工厂造成了很大范围的空气污染。
The factories are responsible for fouling up the air for miles around.
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