巨无霸指数的基础是购买力平价，即一种货币的价格应该反映它所能买到的商品和服务。
The index is based on the idea of purchasing-power parity, which says that a currency's price should reflect the amount of goods and services it can buy.
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.
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.
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