the illegal buying and selling of goods, especially when it is difficult or expensive to obtain them legally 黑市;非法交易 There's a thriving black market in vodka and cigarettes. 伏特加酒和香烟的黑市交易很兴旺。
on the black market : Rhino horns can fetch up to £4,000 on the black market. 犀牛角在黑市上可卖到4,000英镑。
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