Since Big Macs have become a kind of Shared international good, the index is a fairly accurate way of measuring comparative standards of living around the world.

自从巨无霸成为一种全球共有的食物以来，这项指数就成为一个用来衡量全球生活水平比较的相当精确的方法。

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This model has been confirmed by Confirmatory Factory Analysis, and the goodness of fit index is fairly good.

该模型经验证性因素分析表明其模型的拟合度良好。

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Whereas big swings in oil prices usually reflect supply shocks, and precious metals are often seen as a safe haven in times of crisis, The Economist's commodity price index (which excludes oil and precious metals) has traditionally been a fairly good leading indicator of turning-points in global industrial output.

ECONOMIST: The prices of most raw materials have been surging