live and learn used, especially in spoken English, to acknowledge that a fact is new to you.
2006Toni SchlesingerFive Flights Up I spent all my money on this lizard. I think you live and learn.
英语词组固定搭配大全包含15956条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。