一些经济学家认为巨无霸指数在预测长期汇率波动方面一直惊人的准确。
Some economists think the Big Mac index has been surprisingly accurate in predicting long-run movements in exchange rates.
该指数基于购买力评价理论确立，根据购买力平价理论长期汇率应当调整使两国同样的一篮子商品的价格相同。
It is based on the theory of purchasing-power parity (PPP), which argues that in the long run exchange rates should move to equalise the price of an identical basket of goods between two countries.
美联储同样认为，保持长期汇率不变地承诺是有条件的，并不是像许多人认为的那样，一定要是6个月，而是以高失业率和低通货膨胀率(两者皆实际存在且已被预期)为前提的，如果有前提改变的话，利率自然也会跟着改变。
It does not mean six months, as many seem to think, but only as long as unemployment remains high and inflation (both actual and expected) stays low. If those things change, so will interest rates.
由于这部分收益率将决定着银行和企业的借贷成本，事实证明，在推动经济增长的进程中，长期收益率比短期汇率更重要。
Because such yields determine the borrowing costs of Banks and firms, long-term yields are arguably more important than short-term rates in driving growth.
由于这部分收益率将决定着银行和企业的借贷成本，事实证明，在推动经济增长的进程中，长期收益率比短期汇率更重要。
Because such yields determine the borrowing costs of Banks and firms, long-term yields are arguably more important than short-term rates in driving growth.
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