For decades, researchers and law enforcement agencies have tried to build a machine that will do the same thing.

几十年来，研究人员和执法机构一直试图制造出一种能做同样事情的机器。

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We need to restore respect for the law enforcement agencies.

我们需要重建对于执法机关的尊重。

《柯林斯英汉双解大词典》

"There have been requests from law enforcement agencies," she said.

“之前有有过从执法组织来的请求，”她说。

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A poll by the Pew Internet and American Life Project says are concerned that law enforcement agencies could access their files.

VOA: standard.2010.06.22

Together we must promote and defend the integrity of our state institutions including the judiciary and law enforcement agencies,".

VOA: standard.2009.04.25

But U.S.officials say many of those cartels have infiltrated American law enforcement agencies assigned to combat the drug trade.

VOA: standard.2010.03.11

As the final summer holiday approaches, law enforcement agencies across the country are gearing up.

FORBES: Labor Day Weekend Warning: 'Drive Sober or Get Pulled Over'

We're asking for the authority for the law enforcement agencies to share information with intelligence agencies.

CNN: Solicitor General Ted Olson

She credited Nicaraguan officials as well as U.S. law enforcement agencies for helping in the investigation.

CNN: Fugitive on 'Most Wanted' list returned to U.S.