指婚丧、生日等时得到亲朋好友的帮助或资助，就像欠了人家的债一样debt of kindness

• 母亲过世前医院帮过忙，所以我是在还人情债。

  Before my mother passed away, the hospital helped, so I am repaying my debt of kindness.

• 老百姓早已把婚宴看成了“人情债”。

  Ordinary people have long since regarded wedding banquets as a "debt of kindness"