In normal circumstances, powerful economic forces work against an increasingly undervalued real exchange rate.

在正常情况下，强大的经济力量会纠正日趋低估的实际汇率。

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Nourizadeh says Iran was probably hoping to win the release of five Iranian military men captured by U.S.forces in Kurdistan in 2005 in exchange for Saberi, but eventually realized that such a trade would not work.

VOA: standard.2009.05.06

Inevitably, such a solution boils down to insistence that multinational forces be withdrawn from the region in exchange for Iraqi forces being moved a relatively short distance up the road.

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The government has long allowed market forces to determine exchange rates, intervening only to smooth wild fluctuations.

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The cost-exchange ratio decisively favors offensive forces.

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