dirty bond

例句：

1. 1. The company is struggling to repay its dirty bonds.
   这家公司正努力偿还其不良债务。
2. 2. The government needs to clean up its dirty bonds before the election.
   政府需要在选举前清理其不良债务。
3. 3.The investors are concerned about the potential for bad debts in the new project.
   投资者对新项目可能产生的不良债务表示担忧。