act (or be) your age behave in a manner appropriate to your age and not to someone much younger.
2000Will SelfHow the Dead Live Don't be a fool, girl … Act yer age-think!
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。