黑市: black market 短语和例子黑市汇兑 black market exchange; 黑市价 black rate; 黑市交易 off-the-books deal; 黑市商人 blackmarketeer; 黑市投机买卖 black market; speculative trading
黑市交易: black market bargainblack market operationblack market transaction in foreign exchangesclandestine dealingoff the books dealoff-the-book deal quotationoff-the-books deal