By definition, a system is a self-contained entity that includes all the resources needed to satisfy its business purpose or mission.

按照定义，一个系统是一个自我包含的实体，包括所有的需要满足其业务目的或任务的资源。

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Any definition of a distance metric has to satisfy a handful of properties to qualify; for example, a distance can never be negative.

距离度量的任何定义都必须满足一些可以度量的属性；例如，距离永远不可能为负。

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Tarski thought that a satisfactory definition of truth should satisfy two conditions: (1) it is formally correct; (2) it is materially adequate.

塔斯基认为，令人满意的真句子定义应该满足两个条件：(1)形式上正确：(2)实质上适当。

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