Definition
Used to express absolute certainty that something is true or will happen.
相信不疑
You can bet your life they'll be there on time.
你可以百分之百确定他们会准时到。
You can bet your life the food at this restaurant is amazing.
你可以百分之百确定这家餐厅的食物非常美味。
You can bet your life that he'll forget to bring his report tomorrow.
你可以百分之百确定他明天会忘记带报告。