PPP, rather than market exchange rates, is regarded as a better measure of the relative cost of living, since it is based on goods and services households can buy with their domestic currency.

• 购买力平价(ppp)而非市场汇率被视为衡量相对生活成本的更好尺度，因为它的衡量基础是各个家庭用本国货币所能购买的商品和服务。