have a fling at的用法和样例：
- He is willing to have a fling at almost any job.
- The excited fan have a fling at the lose team.
- The excited fans had a fling at the lost team.
- The young man had a fling at boxing.
- Don't pull the ball away, I am going to have a fling at a game.
- The young man had a fling at swimming.