You can also extend this file so that it checks a user's permissions, serving only files for which that user has access.

您还可以通过扩展这个文件来检查用户的许可，只向用户提供所允许的文件。

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"This kind of science can only take you so far," said Ginsburg, who has also played and coached soccer. "There are an enormous number of factors that go into this."

曾经也踢过足球并当过足球教练的金斯伯格说，这类的科学研究能做的也就只能到这了，比赛中存在着太多的因素影响，而这些也将永远是比赛中未知的变数。

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I hope this column has not only clarified the confusion but has also helped you see those possibilities.

我希望这篇专栏文章不仅能帮您消除疑惑，而且能帮您了解这些可能性。

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This has now not only contributed to the spectrum crisis but also inflated the value of this unused spectrum.

FORBES: Washington Says Not So Fast To Verizon Spectrum Grab

The cooperative and its members know this is a step forward in rebuilding and conserving Rio's environment, but for many, this also means their only source of income has gone down the drain.

CNN: Landfill's closure changing lives in Rio

Not only has this put off many swing voters, it has also cemented the impression that Mr Romney is a slippery flip-flopper.

ECONOMIST: Overview