1. In retrospectus, I can see that I made the right decision by quitting my job and starting my own business.
回顾过去，我可以看到辞职开办自己的生意是一个正确的决定。

2. The company published a retrospectus of its achievements over the past year.
公司出版了去年的业绩总结。

3. The university provides a retrospectus for prospective students, giving them an overview of the courses offered.
该大学为有意向的学生提供概要指南，介绍所开设的课程。