make unlawful gains

例句：

1. 1.They made unlawful gains by selling counterfeit goods.
   他们通过销售假冒商品获得了非法收益。
2. 2. The company was found guilty of making unlawful gains through insider trading.
   该公司因内幕交易被判定为非法获利。
3. 3. He made unlawful gains by illegally mining the land.
   他通过非法开采土地获得了非法收益。