无法恢复 master 数据库。SQL Server 无法运行。请利用完整备份还原 master 数据库，修复它，或者重新生成它。有关如何重新生成 master 数据库的详细信息，请参阅 SQL Server 联机丛书。
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English version
Cannot recover the master database. SQL Server is unable to run. Restore master from a full backup, repair it, or rebuild it. For more information about how to rebuild the master database, see SQL Server Books Online.
SQL Server