1821, "fall of snow," especially a quiet one (as distinguished from a snowstorm), from snow (n.) + storm (n.). From 1875 as "amount that falls at a place in a given time."
权威例句
1. The total rain and snowfall amounted to 50mm.
降雨量和降雪量共达50毫米。
2. Several villages have been isolated by the heavy snowfall.
好几个村庄因大雪与外界隔绝.
3. We have had incessant snowfall since yesterday afternoon.