1. The source of drugs was black-market. 毒品主要来源是从黑市购买；
2. From nuclear top to black-market bottom, the state is one giant protection racket. 从最上层的核武器到最底层的黑市，北朝鲜整个是个勒索保护费的黑社会。
3. Buying black-market dollars was considered the safest way to protect one's savings. 过去，买入黑市上的美元被认为是储蓄保值的最佳方式。
英英解释
n.
1. people who engage in illicit trade
2. an illegal market in which goods or currencies are bought and sold in violation of rationing or cont v.
1. deal in illegally, such as arms or liquor
2. distributed or sold illicitly
