Offline archive logs - archive logs that are being moved from active log directory to either another directory in another media or tape.

脱机归档日志——如果将联机归档日志从活动日志所在目录移动到其他目录或磁带中，就成为了脱机归档日志。

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Now people can read or write an email, and archive or organize messages in Gmail while offline.

FORBES: Google Takes Gmail, Calendar, Docs Offline: A Big Plus For Chromebook