Patoka has always been an arid region with little rainfall and no glacial water.

帕塔卡一直是一个干旱地区，很少降雨，没有冰川水存在。

The drought was spurred by low rainfall and unregulated water use.

这场干旱由降雨量低以及用水不规范造成。

That information enables researchers to determine rainfall patterns over the millennia.

这些信息使研究人员能够确定几千来降雨模式。

There must be at least three rainfalls a year for good saffron yield.

要获得好藏红花产量，每至少要有三次降雨。

In fact, Seattle ranks 44th among major US cities in average annual rainfall.

实际上，西雅图平均降雨量在美国主要城中排名第 44位。

That's about two years' worth of normal rainfall in an otherwise arid country.

这是一个干旱国家大约两正常降雨量。

Record breaking rainfall and flash flooding causing the mayor to issue a state of emergency.

面对创纪录暴雨和洪水，纽约宣布进入紧急状态。

We're seeing a kind of rainfall we almost never see.

这场暴雨是几乎称得上是史无前例。

And as I mentioned earlier, areas like this received little to no rainfall annually.

我之前提起过，这样地区降雨量很少，几乎为零。

There are late frosts, a lot of grasshoppers and not a lot of rainfall.

霜冻较晚，蝗虫很多，降雨量也很少。

Record rainfall wreaking havoc on the northeastern part of the island country over the weekend.

这个岛国东北部在上周末遭遇了创纪录暴雨。

Heavy rainfall caused widespread flooding and power cuts, and disrupted transport systems.

强降雨造成了大面积洪水和停电，并中断了交通系统。

A truffle is about 70% water, so it needs rainfall to help it grow.

松露大概70％都是水分，所以需要降水来帮助它生。

More than three times their annual rainfall in only four days.

仅仅四天降雨量就超过了全降雨量三倍。

Globally, rainfall during major storms is expected to increase 20% by 2100.

到2100，全球主要风暴期间降雨量预计将增加20%。

Other cloud-seeding programs have also shown increases in rainfall of about 15%.

其他人工增雨程序也显示降雨量增加了约15。

In places where there is a lot of rainfall, an abundance of life springs forth.

在雨量充沛地方，生命会茁壮成。

After rainfalls, the colony comes together, using the wet dirt to expand their nest.

雨后，蚁群聚在一起，用潮湿泥土扩建巢穴。

The mormal rainfall in the area is very low.

该地区正常降雨量很小。

The fresh air is sometimes humid from the abundant rainfall of this area.

清新空气有时会因这地区丰沛降雨而潮湿。