三角债

例句：

1. 1. The company has accumulated a large amount of unpaid bills in the past year.
   该公司在过去一年内积累了大量未付账单。
2. 2. The government is trying to resolve the longstanding debt problem with its foreign partners.
   政府正试图解决与外国伙伴之间的长期债务问题。
3. 3. The two companies have reached a settlement agreement on their outstanding debts.
   两家公司就未清债务达成了和解协议。