This type of communication between objects is very flexible and easy to "rewire".
这种对象间通信的方式非常灵活，并且容易“重新组合”。
Notifiers make anonymous communication between objects in a system possible.
事件通知使得系统中各对象间可以实现匿名通信。
Notifiers make anonymous communication between objects in a system possible.
事件通知使得系统中各对象间可以实现匿名通信。
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