black market exchange

英 [blæk ˈmɑːkɪt ɪksˈtʃeɪndʒ]

美 [blæk ˈmɑːrkɪt ɪksˈtʃeɪndʒ]

黑市兑换；黑市汇兑

The rate of exchange between the US dollar and RMB is 1:9.6 on the black market. ( Black market refers to the secret and illegal exchange.)
黑市上美元与人民币的比价是1：9.6。（秘密而又违法的交易场所）
The Regime Relationship between Black Market Exchange Rate Premia and Inflation Rate ( 1990-2006);
外汇黑市汇率溢价与通货膨胀率的区制关系分析（1990~2006）
Some people, for instance, in the name of "investment company" or "consulting company", seduced others into" makeing investment "in overseaoverseas futures; some established private exchange site served serving as black market exchange.
如有的打着“投资公司”、“咨询公司”的招牌，诱惑一些人“投资”境外期货；有的私设窝点，搞地下黑市交易。
Black market prices fluctuated between 60 and 80 per cent of the official exchange rate.
黑市价格在官方汇率的60%至80%之间波动。
Empirical Analysis of Black Market Exchange Rate and NDF Correlation
外汇黑市与NDF市场相关性的实证分析