Finally, and in the most extreme case, the development integration run time and system test environments can be combined.

最后，在最极端的情况下，开发集成运行时环境和系统测试环境可以组合在一起。

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How could testers remain involved in the requirements elicitation activity while immersed in system, integration, and user acceptance test, all at the same time?

测试人员如何能够仍旧参与需求启发活动，同时又浸入系统、集成，和用户体验测试？

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This sets a system-wide property, which is read by the factory class used to switch between integration implementations, this time using the Spring model.

此文本将设置一个系统范围的属性，该属性可被工厂类读取，用于在集成实现之间进行切换，此时使用 Spring 模型。

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