smog

Thick smog hid the hills beyond our apartment. ▶

浓重的雾霾遮住了我们公寓远处的山丘。

Reducing vehicle emissions can help cities tackle smog and protect residents from respiratory diseases.

减少机动车排放有助于城市治理雾霾，保护居民免受呼吸系统疾病的侵害。