无法对数据库 '%1' 运行 RESTORE，因为已将它配置用于数据库镜像。如果希望还原该数据库，则请使用 ALTER DATABASE 删除镜像。
Click to search this error in Google
English version
RESTORE cannot operate on database '%1' because it is configured for database mirroring. Use ALTER DATABASE to remove mirroring if you intend to restore the database.
SQL Server