Definition
to impersonate a specific role or engage in an activity, typically as a form of play
(游戏中)假扮
The children are playing at being construction workers in the sandbox.
孩子们正在沙箱里假装是建筑工人。
She played at being a famous singer at the party, much to everyone's delight.
她在派对上假装成一位著名歌手，让大家都很开心。
They played at being superheroes in the park, competing with each other.
他们在公园里假装成超级英雄，互相竞争。
to pursue an activity for pleasure or curiosity, without serious intent or dedication
玩玩闹闹，儿戏似地做
He is just playing at cooking and doesn't intend to take it seriously.
他只是玩玩烹饪，并没有打算认真对待。
She is just playing at being an artist without considering herself one.
她只是玩玩艺术，并不认为自己是艺术家。
They are only playing at the sport for fun, with no intentions of going pro.
他们只是玩玩这项运动，并没有打算成为职业选手。