London's high humidity made it a prime location for industrial smog.

伦敦的高湿度使其成为工业烟雾的主要发生地。

Countries like China and Poland that depend on coal for energy experience high levels of industrial smog.

中国和波兰等依赖煤炭作为能源的国家经历了严重的工业烟雾。

This industrial smog was known to form when smoke from coal-burning home stoves and factories combined with moisture in the air.

众所周知，当燃煤的家庭炉灶和工厂产生的烟雾与空气中的水分结合时，就会形成这种工业烟雾。