Definition
This idiom is used to advise someone to have fun and enjoy themselves but also to be cautious and avoid taking unnecessary risks.
尽情盡興，但請務必小心。
Kids, go have fun, but remember, be good, and if you can't be good, be careful.
孩子們，去玩得開心，但記住，要乖，如果不能乖，就要小心。
I know you're looking forward to the party, have a good time, but remember, be good, and if you can't be good, be careful.
我知道你期待著派對，玩得開心，但記住，要乖，如果不能乖，就要小心。
College life is an amazing experience, enjoy it, but remember, be good, and if you can't be good, be careful.
大學生活是一段美好的經歷，好好享受，但記住，要乖，如果不能乖，就要小心。