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.
从穷国到富国的移民一定会下降，因为经济衰退意味着移民者的工作机会减少，在一些国家，移民政策和边界控制在收紧。
Migration from poor countries to rich ones is bound to decline, as the recession means fewer jobs for migrants and, in some countries, as immigration rules and border controls are tightened.
一些公司已经在采用依据人均收入区别定价的方法向贫穷国家提供价格较低的药品。
Some firms have adopted “differential pricing” schemes that use formulas, based on average income per head, to set lower prices in poor countries.
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