A monetary system of fixed exchange rates whose parities were set in relation to gold.

货币能以固定的比率兑换黄金的货币制度。

Despite high inflation in the meantime, many countries restored their pre-war gold parities.

尽管通胀十分严重，许多国家恢复了战前的金平价。

The obvious difference is that in 1971 America was locked into a system of fixed parities.

显而易见的差别是，1971年美国采用固定汇率制度。

A better method is to use purchasing-power parities (PPP), which take account of price differences.

一种更好的方法是以购买力平价(PPP)计算，它考虑到了价格差异。

In all three, the level of productivity (measured at purchasing-power parities) is higher in services than in industry.

这三个国家的服务业生产力水平(以购买力平价为衡量标准)均高于工业生产力水平。