“降雪量”用英语怎么说？

降雨量和降雪量共达50毫米。The total rain and snowfall amounted to 50mm.我国这个地区每年的平均降雪量为20英寸.Snowfall averages out in this part of the country at twenty inches a year.今年的降雪量低于平均水平.The amount of snow this year has been below average....