UNIX is one of the most secure operating systems available.
UNIX是目前最安全的操作系统之一。
In its default configuration, OpenBSD has proven one of the most secure operating systems available.
在它的默认配置下，OpenBSD已经证实是当前最为安全可靠的一种操作系统。
The importance of secure operating systems in computer security iscausing more and more attention.
安全操作系统在计算机安全中的重要作用越来越引起人们的关注。
As an important component of high-level secure operating systems, the privilege control mechanism can provide an appropriate level of security assurance for the system.
特权控制机制是高安全等级操作系统中一个重要的组成部分，它能够提供系统恰当的安全保证级。
As an important component of high-level secure operating systems, the privilege control mechanism can provide an appropriate level of security assurance for the system.
特权控制机制是高安全等级操作系统中一个重要的组成部分，它能够提供系统恰当的安全保证级。
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