While the history data of DB2 PE is only retained for a short time (hours or days), once data is in the PWH, the data is available for reporting and trend analysis over much longer periods.

尽管DB 2 PE的历史数据只保留较短的时间(几小时或几天)，但是一旦数据被保存在PWH中，这些数据便可在很长的时间内用于报告和趋势分析。

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In short, art expresses the essential qualities of a time and a place, and a study of it clearly offers us a deeper understanding than can be found in most history books.

简而言之，艺术传达了一个时代和一个地区的基本情况，因此艺术研究能够清晰的给我们提供比大多数历史书更深刻的理解。

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History has shown, however, that spikes in the incidence of meningococcal disease can occur over a short time period and without warning.

FORBES: Immunizing Bureaucrats Against Complacency

Dedicated to creating "inspirational ... films that offer compelling, positive messages, " Crusader's first film will be something called Sound of Thunder, based on a Ray Bradbury short story about a posse of big-game hunters who go back in time to chase dinosaurs and change history.

FORBES: Morality Play

It was only the 23rd time in the House's history that a member was censured, the most severe punishment short of expulsion.

WSJ: Rangel files suit to overturn censure