To make data unavailable the administrator needs to turn off the service for that user.
要想使数据不可用，管理员需要将该用户的服务关闭。
This indicates that the service is unavailable or that the user login has expired.
这表示服务不可用或用户登录已过期。
This indicates that the service is unavailable or that the user login has expired.
这表示服务不可用或用户登录已过期。
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