Only a handful of currencies are close to their BigMacPPP.
只有一小部分货币接近它们的巨无霸购买力平价。
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The BigMac 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.
THE BigMac index is based on the theory of purchasing-power parity (PPP)—exchange rates should equalise the price of a basket of goods in different countries.