空气污染越来越严重。

The air pollution is getting worse.

交通总是很糟糕，更不用说空气污染了。

The traffic is always bad, not to mention the air pollution.

许多大城市为了避免空气污染已经放弃了这个习俗。

Many big cities have given up this custom in order to avoid air pollution.

嗯，为了减少空气污染，我们应该乘坐公交车或地铁而不是开车。

Well, to cut down air pollution, we should take the bus or subway instead of driving.

空气污染对健康有害。

Air pollution is harmful to health.

使用清洁能源可以减少空气污染。

Using clean energy can reduce air pollution.

这个设备可以用来检验空气污染。

This device can be used to test air pollution.

保护树木可以帮助减少空气污染。

Protecting trees can help reduce air pollution.

肺病患者应避免空气污染。

Patients with lung disease should avoid air pollution.

工厂排放的废气导致了空气污染。

The factory emissions have caused air pollution.