firn

Snowslide, The Flow of snow in wind, firn, it is snow Disaster in alp.

雪崩、风吹雪及厚层积雪，是高山和严寒地区特有的一种自然灾害。

One big early, environmental sanitation workers are taking the firn of main main road inside city of big broom broom.

一大早，环卫工人们便拿着大扫帚扫除市内主要交通干线的积雪。