【专业英语怎么说】犯罪专业英语每日一词（三）

[双语解释]Plain clothes policeman who work undercover to detect crime 隐蔽调查犯罪的便衣警察。例句：Sean has been a mem生活实用行业英语

[双语解释]

Plain clothes policeman who work undercover to detect crime.隐蔽调查犯罪的便衣警察。

例句：

Sean has been a member of the vice squad for nine years.西恩在缉捕队工作已经9年了。

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