欠帐

例句：

1. 1. He owes his parents a large sum of money for his college education.
   他欠父母一大笔钱，用于他的大学教育。
2. 2. The company is currently in the red due to the rising costs.
   由于成本上升，公司目前处于亏损状态。
3. 3. The debt collector called me last week demanding payment immediately.
   上周，债收人员打电话给我，要求立即支付欠款。