Bad Sector

例句：

1. 1. The company's performance in the bad sector has been disappointing.
   该公司在不良部门的表现令人失望。
2. 2. The government is considering a new law to regulate the bad sector of the economy.
   政府正在考虑一项新法律，以监管经济中的不良部门。
3. 3. The research team identified several bad sectors that needed improvement.
   研究团队识别了几个需要改进的不良部门。