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They can even become outdated if you don’t notice changes in the area.

如果你不注意更新这一领域的变化，你的知识也会变得过时没用。

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Google's gadgets were originally written to a specification that has now become outdated.

Google gadget最初的一个规范现在已经落伍了。

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The measure is designed to remove language that has become outdated or demeaning from the US code.

BBC: US Congress bans word 'lunatic' in federal legislation

It said the current station had become outdated, and the new location would be more convenient for passengers.

BBC: Hemel Hempstead bus station and market

Issuers tend to make changes in rates and terms fairly often so the database will quickly become outdated.

FORBES: Fed's New Credit Card Web Site Will Have Limited Effectiveness