When melting snow-crystals or raindrops fall through very cold air, they freeze to form small particles of ice, called sleet.

VOA: special.2011.01.11

And it's dangerous. People slip and fall on the snow because it's made of ice.

这样也很危险，人们会在雪上滑倒，因为雪里面都是冰。

I'm glad 实战 - SpeakingMax英语口语达人

In warmer climates, snow is known to fall in areas over four thousand nine hundred meters above sea level.

VOA: special.2010.01.05

One reason is that heavy amounts of snow fall in surprisingly small areas.

VOA: special.2010.01.05

Experts sometimes have difficulty estimating where,when or how much snow will fall.

VOA: special.2010.01.05

The snow usually begins to fall in the month of November.

VOA: special.2009.01.07

But that would have to happen quickly before snow fall would make many areas inaccessible for the winter.

VOA: standard.2009.09.12