black market exchange

基本解释

In Zimbabwe, the black-market exchange rate is nearly ten times the official one. Much of the economy is now informal.
现在在津巴布韦，黑市外汇率接近官方汇率的十倍，大部分的经济体制都是都是不正规的，大约80%的人不在做官方认可的工作。
Thanks to the crackdown on private markets and uncertainties about the currency measures, the black-market exchange rate has apparently tumbled by half.
因为私人市场被取缔及货币政策的踌躇不定，黑市上的汇率又大幅下挫近50%。
This, however, may push others towards the black market or offshore, further undermining the credibility of the official exchange rate.
然而这会使其它人走向黑市或海外市场，这样就会更加削弱官方汇率的可信度。

In Zimbabwe, the black-market exchange rate is nearly ten times the official one.
ECONOMIST: Zimbabwe
In August, Forbes first disclosed that American Express had been used by Colombians to launder drug money through the black market peso exchange, a trade-based money laundering system.
FORBES: Magazine Article
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