| n 用法:
1 [C] fall of snow on one occasion （一次的）降雪:
There was a heavy snowfall last week. 上星期下了一场大雪. 用法:
2 [U] amount of snow that falls in a period of time (eg one winter or one year) in a certain place 某地一段时期（如一冬或一年）的降雪量:
The average snowfall here is 10cm a year. 这里年平均降雪量为10厘米. |