这可能涉及让您的新系统向其他应用程序公开，或实现其他系统接口来与之交互。
This could involve either opening up your new systems to other applications or implementing other system interfaces to interact with it.
您必须了解系统上运行的各种应用程序，以及它们同产品及作为产品底层的系统是如何交互的。
You must understand the applications running on the system and how they interact with the products and systems underneath them.
参与者可以是与应用程序交互、在应用程序外部的任何最终用户、组织或系统。
An actor is any end user, organization, or system that interacts with, but is external to, your application.
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