Check the validity of a board at any stage.

在任何的阶段检查董事会的有效性。

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However, the reader is cautioned to always refine and double-check the validity of the model.

不过，需要提醒读者的是，始终要细化并核实模型的有效性。

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Somewhat obviously, they can be used to check the validity of a block of data such as a journal transaction.

显而易见，这种方式也可以被用来检查写入数据(比如日志事务)的有效性。

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Most printers look for a firmware update every time they receive a job but, for some reason, they rarely check the validity of an incoming file.

ENGADGET: Researchers expose printer vulnerability, turn LaserJets into literal time bombs (update)

This workaround relies on the fact that Microsoft is currently offering, for a time limited period, free upgrades for the Media Center add-on, and it is this process that is flawed because Microsoft does not check the validity of the original key used to activate the copy of Windows 8 Pro before dishing out another key.

FORBES: Microsoft Blunder Gives Pirates Free Copies Of Windows 8 Pro

They forward spurious data to others before taking a moment to reflect on its worth or check its validity - the equivalent of passing on some scuttlebutt by word of mouth, but this time to thousands across the world.

CNN: BELIEVE IT OR NET