Plain clothes policeman who work undercover to detect crime.

隐蔽调查犯罪的便衣警察。

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We pledge to uphold the law, to protect life and property, to prevent and detect crime.

我们承诺维护法律，保护生命和财产，防止和侦查罪案。

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Undercover Investigations is a useful method to detect the organized crime and group crime.

卧底侦查是侦破有组织犯罪、团伙犯罪等案件的有效手段。

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They said the police were crying out for this new system which was a vital tool not just to detect crime but also to prosecute criminals.

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Inspector Morse or Sherlock Holmes would find it hard to detect the crime.

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British law already allows police to remotely access computers under the Regulation of Investigatory Powers Act 2000, which allows surveillance to "prevent or detect serious crime".

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