这种指数通过对进口铁和国产铁矿石取以加权平均价格以此产生一个合成数。

The index works by taking a weighted average of the price of imported iron and domestically produced iron ore to produce a composite number.

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尽管巴西货币雷亚尔，自去年开始相对美元上涨了35%，使进口更加便宜，但消费者物价指数却在过去的12个月中上涨了5.2%。

Even though the currency, the real, has strengthened by 35% against the dollar since the start of last year, making imports cheaper, consumer prices have risen by 5.2% in the past 12 months.

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事实上在10月份，美国企业的采购经理人指数显示，出口急剧上升，进口出现下降。

Indeed in October, American factory purchasing managers reported a sharp jump in export orders and a drop in imports.

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