On the other hand, rainfall increased in the interior of western Africa, and the northern limit of the tsetse fly, an insect fatal to cattle, moved south.

另一方面，西非内陆的降雨量增加，采采蝇活动区域的北部边界向南移动——一种对牛致命的昆虫。

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Rainfall increased since this solar term, greatly benefit for growing of duckweed and cereal crops, cuckoos remind people to seed.

谷雨后降雨量增多，浮萍开始生长，接着布谷鸟便开始提醒人们播种了。

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Rainfall is also increased in cities.

城市的降雨量也在增加。

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Since the 1980s, as global temperatures warmed again, Sahel rainfall increased dramatically again.

FORBES: Despite What You Hear, Global Warming Is Still Benefiting Africa

This may possibly be because of decreased rainfall, not increased temperatures, as Gore argues.

NPR: Assessing the Art, Science of 'Inconvenient Truth'

During the first half of the twentieth century, as global temperatures rose in the aftermath of the Little Ice Age, rainfall in the Sahel increased dramatically.

FORBES: Despite What You Hear, Global Warming Is Still Benefiting Africa