kid's stuff
成語所屬單字kid
kid's stuff — 慣用語
1. something so easy or simple that it is suitable for children, or is not worth ta
1.慣用語
釋義
小兒科（指非常簡單或幼稚的事情）
something so easy or simple that it is suitable for children, or is not worth taking seriously.
例句
After years of training, that puzzle was kid's stuff for the chess champion.
Some adults think playing video games is kid's stuff, but they are wrong.