2015年发表在《自然》杂志上的一项研究预测，与没有变暖的世界相比，最贫穷国家的平均收入到2100年将减少25%，而一些最富有的国家——比如美国——收入可能会增加。
A 2015 study in the journal Nature predicted that the average income in the poorest countries will be 25% lower by 2100 compared to a world without warming, while some of the richest countries—like the USA—could experience an increase in income.
在苏丹(另一个富有石油的国家)，富源本该再次为这个饱受贫穷与干旱的国家带来利益。
In Sudan, another country awash with oil, the bonanza should once again have benefited a country that suffers from both poverty and drought.
从1990年到2009年，最富有的三个地区与最贫穷的三个地区的人均GDP比值几乎上涨了十分之一。
The ratio of GDP per head in the three richest regions to the three poorest increased by almost a tenth between 1990 and 2009.
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