1
a snowfall of + quantity
a snowfall of 后接具体数量，表示一次降雪的降雪量。
The forecast predicts a snowfall of 15 centimeters.
天气预报预测一场15厘米的降雪。
降雪
先理解核心含义，再看它在真实句子里的用法。
降雪
the falling of snow from the sky
The forecast predicts a snowfall of 15 centimeters.
天气预报预测一场15厘米的降雪。
一次降雪。
An instance of falling of snow.
以冰晶形式从云中降落的降水
precipitation falling from clouds in the form of ice crystals
一次降雪量。
The amount of snow that falls on one occasion.
The heavy snowfall last night closed the mountain road.
昨晚的大雪封闭了山路。
The average annual snowfall in this region is two meters.
这个地区的年均降雪量为两米。
Scientists study snowfall to predict avalanche risks.
科学家研究降雪以预测雪崩风险。
a snowfall of 后接具体数量，表示一次降雪的降雪量。
The forecast predicts a snowfall of 15 centimeters.
天气预报预测一场15厘米的降雪。
snowfall 是可数名词，复数 snowfalls 在 there be 句型中表示多次降雪事件。
There have been several snowfalls this month.
这个月已经下了好几场雪。
Not this
It snowfalls a lot in Harbin in winter.
Use this
It snows a lot in Harbin in winter.
snowfall 是名词，不是动词；表示“下雪”要用动词 snow，所以 It snowfalls 应改为 It snows。
Not this
We had many snowfall this winter.
Use this
We had many snowfalls this winter.
snowfall 在表示“一场降雪”时是可数名词，受 many 修饰必须用复数 snowfalls，不能省略 -s。
Not this
The ground is covered with snowfall.
Use this
The ground is covered with snow.
snowfall 指“降雪”这个事件或降雪量；表示地面上白色的积雪要用 snow。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
大雪，强降雪
The city experienced heavy snowfall last night.
那座城市昨夜经历了强降雪。
小雪，微量降雪
A light snowfall covered the streets by morning.
一场小雪在清晨覆盖了街道。
年降雪量
The annual snowfall in this region is about two meters.
这个地区的年降雪量约为两米。
创纪录的降雪
This winter brought record snowfall to the area.
今年冬天给该地区带来了创纪录的降雪。
夜间降雪
The overnight snowfall made the roads slippery.
夜间降雪使道路变得湿滑。
Use snowfall naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把snowfall拆成snow（雪）+fall（落下），想象雪花纷纷飘落的画面，既指‘降雪’也指‘降雪量’。
语域：neutral 常见场景：天气报道、气象讨论、日常描述 通常为中性用词，多用于天气报道和日常描述，正式或非正式场合都比较常见。
这些词都以 /-ɑl/ 结尾，与 snowfall 中 fall 部分的美式发音相同，可押韵。注意：不要被 snowfall 开头的 snow 迷惑，snow /snoʊ/ 或 snowman /ˈsnoʊ.mæn/ 等以 /-oʊ/ 或 /-oʊ.mæn/ 结尾，并不与整词押韵。
Dictionary facts from ECDICT, WIKTIONARY.