The amount of rainfall determines the quality of the crop.

降定着收成的好坏。

Rainfall has been above normal this July.

今年7月份降高于正常。

The annual rainfall in this area was less than 50mm last year.

本地区去年的降不足50。

Rainfall averages out in this part of the country at 800mm a year.

我国这地区的年平均降800。

What is the average rainfall for August in your country?

你们国家八月份的平均降是多少?

The rainfall averages 1000mm a year.

年平均降1000。