play at
1．play（ball，card，etc．）打（球、牌等）
They are playing at hockey．他们正在打曲棍球。
2．play the game of makebelieve of作假装…的游戏
Let's play at being pirates．让我们来假装海盗。
We watched the kindergarteners playing at camping out this afternoon．今天下午我们看了幼儿园的孩子们做野营游戏。
3．do sth．in a halfhearted way 不认真做
You must settle down and concentrate．You're only playing at doing your homework．你做作业一点也不认真，你要定下神来专心做你的作业。
This is a job that needs to be tackled wholeheartedly—not played at．这件工作需要全神贯注认真对待，不能敷衍了事。