act your age
按照年龄行事；成熟一些
口语·用于要求他人表现成熟
英文释义
to behave in a mature and responsible manner appropriate for one's age
例句
Stop throwing tantrums and act your age—you're not a child anymore.
典故来源
直接源于生活场景，是“act one's age”的常见变体，多用于长辈对晚辈或朋友间的调侃。