接下来是代码执行，可能是直接执行，也可能过一段时间之后执行，其执行结果又作为另一请求的一部分被发往这个世界的另一参与者，以此类推。
This is followed, either directly or after some time has passed, by execution of code - as part of which a request might be sent to yet another part of the universe, and so on.
对于将用例图中的参与者转换成类图中有效的抽象，镜像映象模式和会话虚包模式是很有用的，这样最终将能够更清楚地转换成代码。
The Mirror Image and Session Facade patterns are useful for changing actors in use case diagrams into valid abstractions in class diagrams, which ultimately results in a cleaner translation to code.
Snippets是源代码示例的混合体，例如，把菜单项添加到多个视图以及对象中的简短示例代码，以便扩展多方聊天的参与者列表以及其他功能。
Snippets is a grab bag of source code examples, for instance, short examples that add menu items to different views and objects, that extend the n-way chat participants list, and so on.
支付系统行号是参与者通过支付系统办理业务的身份识别代码，由12位定长数字组成。
A payment system bank number is a code for identifying a participator which handles business through the payment system, and is composed of 12 fixed-length digits.
每个参与者将执行到代码中的关卡点为止。
Each participant executes until it reaches the barrier point in the code.
下一屏幕将显示参与者的访问代码。
You will be presented with participant access codes on the next screen.
下一屏幕将显示参与者的访问代码。
You will be presented with participant access codes on the next screen.
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