管理：服务器和某些软件需要连续维护，比如安装安全补丁、升级操作系统和中间件、用户账号管理等等。
Administration: servers, and in particular software, requires continuous upkeep such as installation of security patches, upgrade of the OS and middleware, user account management and so on.
执行硬件、操作系统和数据库系统以及中间件的安装和正在进行的维护工作。
Performs installation and ongoing maintenance work on hardware, operating and database systems, and middleware.
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