如果这不是给定环境的理想选择，您可以在定期维护时间段内显式使用DB 2 runstats或reorgchk命令。

If this is not the desired option in a given environment, you can instead use DB2 runstats or reorgchk commands explicitly in a scheduled maintenance window.

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况且，要它长时间的保持白色外观本身就会产生一些问题，因为在这块房屋外露的部分进行油漆粉刷是很难进行定期的维护保养的。

Maintaining a white finish over a length of time would present its own problems as a paint finish on such an exposed part of the house could require regular maintenance with difficult access.

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美国的煤电厂平均一年有12.5%的时间用来做定期或不定期的维护。

The average U.S. coal plant is offline 12.5 percent of the year for scheduled and unscheduled maintenance.

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