duty unpaid

例句：

1. 1. The company has a long-standing unpaid duty owed to its employees.
   该公司欠员工一笔长期未付的债务。
2. 2. He felt guilty for not paying his unpaid duty on time.
   他因为没有按时支付未付的责任而感到内疚。
3. 3. The government promised to pay back all unpaid taxes within a year.
   政府承诺在一年内偿还所有未付的税款。