With the authorization example , you begin to see what makes aspects uniquely effective at policy enforcement : the use of join points is a powerful way to pick out and refine conditions for applying security rules 通过授权示例，开始意识到什么使得方面在政策强制执行中是非常有效的：连接点的使用是挑选和提炼安全性规则应用条件的强大方法。
