求翻译：系统管理员只需要维护一套统一的用户账号，方便、简单。相比之下，系统管理员以前需要管理很多套的用户账号。每一个应用系统就有一套用户账号，不仅给管理上带来不方便，而且，也容易出现管理漏洞。是什么意思？

The system administrator only needs to maintain a unified set of user accounts, convenient and simple. In contrast, the system administrator need to manage many sets of user accounts before. Each application on a set of user accounts, not only bring inconvenience to the management, but also prone to

System administrators are required to maintain a consistent set of user accounts, easy, simple. In contrast, a system administrator needs to be managed by a lot of set's user account. Each of the application system is a set of user accounts, not only to manage the inconvenient, it is also easy, and

The system manager only needs to maintain a set of unified user account, is convenient, is simple.Comparatively, system manager before need management very many wrap user account.Each application system has a set of user account, not only brings for the management in not conveniently, moreover, also

System administrator only needs to maintain a unified set of user accounts, convenient and simple. By contrast, system administrators need to manage many user accounts before. Each application has a user account, not only inconvenient to bring to management, and is prone to manage vulnerabilities.