安全组件上下文中的一个值是一个列表，包含该组件所允许的0到多个元素。
A value in the context of a security component is a list of zero or more of the elements allowed by that component.
该组件需要哪种事务上下文呢？
What sort of transactional context is required for this component?
对系统的体系结构可使用很多透视图：例如，软件组件视图、上下文视图或操作视图。
There can be many perspectives on the architecture of a system: a software component view, a contextual view, or an operational view, just to name a few examples.
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