为什么相对购买力平价有可能在长期更容易成立? (考虑一下国际贸易公司对可贸易商品存在的巨大
为什么相对购买力平价有可能在长期更容易成立? (考虑一下国际贸易公司对可贸易商品存在的巨大和长期持续的跨国价格差异可能会做出怎样反应。)
Why might it be that relative PPP holds better in the long run than the short run? (Think about how international trading firms might react to large and persistent crossborder differences in the prices of a tradable good.)