The system Administrator is one or more people who can access the portal application at the operating system (OS) level.

系统管理员是一个或多个员工，他们可以访问操作系统(OS)级别的门户应用程序。

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The idea of security starts with our own local operating system (OS) environment.

安全理念起源于我们自己的本地操作系统(OS)环境。

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For example, some software providers may choose a self-managed heap space, while others rely on the underlying operating system (OS) for such functionality.

例如，有些软件提供商可能选择自我管理的堆空间，而其他软件提供商则依赖底层操作系统(OS)来获得这样的功能。

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And if you've ever heard the word driver software that you install in your computer so that your computer, your operating system, Windows or Mac OS, knows how to talk to that piece of hardware, it's that driver software that then empowers the operating systems to send those commands as well, up, the data is laid out on the disk.

并且如果你听说过安装到,电脑中的驱动软件这个词的话，你的操作系统，比如Windows或者是苹果操作系统，通过这个驱动软件我们的电脑，才能知道如何与这个硬件进行通信,正是因为这个驱动软件，操作系统才能根据数据，左右移动的指令来读取磁盘里的数据。

哈佛公开课 - 计算机科学课程节选

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