According to the textbook model of the world, rich countries export their capital to poor countries to foster faster growth.
按照教科书里的世界模型，富国向穷国输出资本，以促成更快的增长。
It is now a standard textbook model in the economics literature.
购买力平价已经成为一个标准的经济学教科书模型。
It is now a standard textbook model in the economics literature.
购买力平价已经成为一个标准的经济学教科书模型。
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