Horses were adopted by peoples of the West African savannah, and later their powerful cavalry forces allowed them to carve out large empires.

西非大草原上的人们驯养了马，后来他们强大的骑兵部队使他们得以建立起庞大的帝国。

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But no committee of lions sat down and decided that the African savannah would be home.

但是并没有一个狮子委员会坐下来决定是否将非洲热带草原作为家乡。

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This makes perfect sense in the intense heat of the African savannah, where humans evolved.

对于非洲大草原上的酷热，这一点显得非常有意义，那里可是人类的发源地。

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There, thick emerald forests give way to wild grasslands reminiscent of the African savannah.

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But then, there were not many tobacconists in the African savannah where humanity evolved.

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"In a landscape, such as the African savannah, birds can just leave if things are not so good, " he told BBC News.

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