black market operation

• 黑市交易

black market operation的用法和样例：

例句

1. It is aimed at stopping the black market.
   它的目的是制止黑市交易。
2. To break up black markets surrounding the antiquities of poor countries, he proposes leasing the artifacts to museums.
   为了打破贫穷国家古文物的黑市交易，他提议将这些艺术品出租给博物馆。