Its Volt has a backup engine to power the car when the electricity drains out.

当电能耗尽时，它有一个储备电压的发动机能给汽车带来强大的动力。

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The DB2 backup utility is fully integrated into the DB2 engine; it is not an add-on utility.

DB 2备份实用程序通常被集成在DB2引擎中，它不是一个附带的实用程序。

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With this storage engine, in the event of a media failure, all units of work since the last good backup is lost.

使用这种存储引擎，在发生介质故障时，自上次备份以来的所有工作都会丢失。

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The backup saved the day -- just as it did in July 1999 when a short circuit knocked out some engine controllers six seconds after Columbia lurched off the pad.

CNN: Challenger explosion