指数在购买力平价（PPP）这一概念基础上产生，购买力平价是指货币应以使商品价格在各个国家保持一致的汇率兑换。
The index is based on the idea of purchasing-power parity (PPP), which says currencies should trade at the rate that makes the price of goods the same in each country.
更令人不安的是，他的年薪将是该国人均GDP的240倍 (以购买力平价基准衡量)。
More worryingly, his salary would be some 240 times greater than the country's GDP per person (measured on a purchasing-power parity basis).
巨无霸指数是建立在购买力平价理论的基础上。 购买力平价理论认为，汇率应该使得一揽子商品的价格在各个国家都相同。
The Big Mac Index is based on the theory of purchasing-power parity (PPP), which says that exchange rates should move to make the price of a basket of goods the same in each country.
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