This can be really dangerous because there are harmful chemicals in the smoke from both wood and coal and they can seriously pollute the air in your home.
这是非常危险的，因为木材和煤炭产生的烟雾中都含有有害的化学物质，会严重污染家里的空气。
2
In Ulan Bator, the air pollution is mainly related to the burning of coal, wood and everything else for heating, cooking, and electricity generation.
乌兰巴托空气污染的主要原因是燃烧煤、木材和其它所有用于加热、做饭和发电的材料。
3
Float Wood floats on water and dust floats in the air.