Using these simple concepts and building blocks, almost anything is possible.
通过使用这些简单的概念和构件，几乎任何事情都有可能实现。
To illustrate these concepts, look at a simple example of an im communication using XMPP between two clients.
为说明这些概念，请看一个在两个客户端之间使用XMPP进行IM通信的简单示例。
To illustrate these concepts, look at a simple example of an im communication using XMPP between two clients.
为说明这些概念，请看一个在两个客户端之间使用XMPP进行IM通信的简单示例。
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