Unlike offline backup, online backup only requires that data files and control files be backed up.

与脱机备份不一样，联机备份只要求备份数据文件和控制文件。

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There's the main cooling system, a backup to it, a backup to the backup, a backup to the backup to the backup, and so on.

首先有一个主冷却系统，然后有一个备用系统，备用系统还有一个备用系统，再有一个备用系统的备用系统，如此下去。

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Online backup: Online backup can be taken even when the applications are connected to the database.

在线备份：即使应用程序和数据库处于连接状态，也可进行在线备份。

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They were recorded with excellent backup singers and musicians.

VOA: special.2009.05.11

But it's more limited in its feature set but again will build backup to those features.

由于其自身的特点而很受限制,但是可以对这些特征进行备份。

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So it's like a backup.

所以，这就像是备用。

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The incorporated backup application and DVD burning software make the entire backup process a breeze.

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Minimize and reduce risk by creating a backup plan (Plan C) for the backup plan (Plan B).

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There are even rumblings from many IT executives that the cloud backup is quicker than the primary backup.

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