Join points may contain other join points.
joinpoint可以包含其它join point。
Typically, there are many join points for each concern.
典型的，对每一个关注点存在着许多连接点。
Control flow — Join points within certain program control flows.
控制流程(Control flow)——在某个流程控制流程中的连接点。
A pointcut is in essence a construct to capture join points.
一个切入点(pointcut)本质上一个用于捕捉连接点的结构。
With AOP, we need a way to identify join points in a program.
使用AOP，我们需要一个在一个程序中识别连接点的方法。
When you select a set of join points, you provide advice for them.
当你选择一系列连接点的时候，你可以为它们提供参考建议。
Try to really leverage join points where objects might not be necessary.
应在可能不需要对象的地方真正利用切入点。
For example, how would you capture join points requiring transaction management or authorization?
例如，如何捕获需要事务管理或者授权的连接点呢？
Some primitive pointcuts match only join points of a specific kind (for example, method executions).
有些原生切入点只与特定类型的连接点匹配（例如，方法执行）。
Join the mid-points on each side of the square to get the Kundli figure.
连接正方形每条边的中点就可以得到坤德里图。
Join the mid-points on each side of the square to get the Kundli figure.
连接正方形每条边的中点就可以得到坤德里图。
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