降雨的英文：
precipitation
rainfall

参考例句：

There will be precipitation on northern hills tonight.
今夜北面山上有降雨。

copious rainfall.
充足的降雨(量)

Three inches of rain fell in Manchester last night.
曼彻斯特市昨夜降雨三英寸.

Three inches of rain fell in manchester last night
曼彻斯特市昨夜降雨叁英寸

Rain or snow falls when a cloud is cooled suddenly.
当一块云突然变冷时，就降雨或降雪。

It can increase rainfall infiltration and freshen saline groundwater.
它能增大降雨入渗，淡化地下咸水。

The flood had been caused by unprecedented rainfall.
洪水是由于前所未有的大量降雨造成的。

Clouds are sometimes seeded with silver iodide to induce precipitation
人们有时在云里播撒碘化银，以诱使降雨。

After three hours of intermittent rain, the game was abandoned.
3个小时断断续续的降雨之后，比赛取消了。

When rain falls, the loess particles on the surface layer swell and form a crust that is almost impermeable to water
降雨时，表层的黄土粒就发生膨胀并形成一层几乎是不透水的表皮。

precipitation是什么意思：
n. 降落；降水量；沉淀（物）；鲁莽；冰雹

That was a precipitous decision.
那是一个轻率的决定。

An agent that precipitates or is capable of precipitating such a state.
骚动的原因引起或能引起这种状态的原动力

precipitate a country into a crisis
使一个国家突然陷入危机

precipitate oneself into(danger)
使自已陷入(危险)

All this will precipitate an economic crisis.
所有这些会促成经济危机。

rainfall是什么意思：
n. 降雨（量）

The rainfall there averages 300mm a year.
那儿的年降雨量平均每年为三百毫米。

The amount of rainfall determines the quality of the crop.
降雨量决定着收成的好坏。

Variable pressure,rainfall,weather,speed
变化不定的压力、降雨量、天气、速度

The mountains rejoice in an average annual rainfall of thirty inches.
山区的年平均降雨量为30英寸。

The areas of greater rainfall conform roughly with these forested areas.
降雨量较大地区大致与这些森林地区相符合。