我丈夫是一个计算机程序员。他利用自己的技术和业余时间，自愿承担了一家非营利性机构的网站建立和维护工作。
My husband is a computer programmer and volunteers his time and expertise to a non-profit organization by creating and maintaining their website.
在计算机从生产中移除之后，管理员可以应用维护。
Once the machine is removed from production, maintenance can be applied by the administrator.
管理和使用方面的政策处理用户怎样和机构的计算机和网络相互作用以及员工（系统管理员）怎样维护网络。
Management and usage policies address how users interact with the organization's computers and networks and how people (system administrators) maintain the network.
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