In these cases, information-system usability is directly influenced by a user's ability to track along a search trail.

在这些情况下，用户沿搜索线索跟踪的能力会直接影响到信息系统的可用性。

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During the development of an information-system interface, the development team's decisions regarding critical points of interest may have profound effects on final usability.

在开发信息系统界面时，开发团队对于相关关键点的决策可能会对最终的可用性产生深远的影响。

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When the component of the protected system is attacked , intrusion tolerant technology can maintain integrity , confidentiality and usability of the whole system's key information and service .

当受保护系统的组件受到攻击时，入侵容忍技术能维持整个系统关键信息和服务的完整性、机密性和可用性。

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