Various definitions for safety and liveness appeared in literature are analyzed and compared.

对现有文献中不同的安全性和活性定义进行了分析和比较。

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Together, this discovery and failure detection is often referred to as liveness.

这个发现和故障检测总称活性。

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The liveness functionality (opening and monitoring of connections) is the main work performed by the HA Manager component itself.

活性功能（连接的打开和监视）是 HA Manager 组件本身执行的主要工作。

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But a number of systems have been fielded that test the "liveness" of the fingerprint before accepting it, Wayman said, and the technology could be incorporated into existing systems.

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