As you process those bad comments, you will check historical information from the database to see if the comment came from previous bad bloggers (spammers).

您处理那些恶意评论时，将检查数据库中的历史信息，看看该评论是否来自此前的恶意博主。

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This database captures the same data automatically on a scheduled interval (performed by the Collector task) and is helpful when performing historical trend analysis.

这个数据库按指定的时间间隔自动地捕捉相同的数据(由Collector任务执行)，这有助于进行历史趋势分析。

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Gather information from events that will be used to calculate the required business measures; optionally, information can be stored in a database for historical analysis.

从事件中收集将用于计算所需业务度量的信息；可选地，可以将信息存储在数据库中以进行历史记录分析。

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At the same time ATSAC builds a rich database of historical traffic statistics used to adjust the timing of signals and to tweak intersection configurations across the system.

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It is extraordinarily difficult to find historical data on homeowner equivalent rent in the BLS database.

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