Police science consists of three parts: police ideology, police art, and police technology.

警事学包括警事思想、警事学术和警事技术科学三个部分。

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Police science majors prepare for police and security work by learning about every aspect of police work.

这个专业学习警察工作的各个方面，以备将来从事警察等安全工作。

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To realize this subject, we should approach it from the theory frame of western Police Science, study institution and personnel.

要了解这一问题，应从西方“警察学”的理论框架、研究机构和人员等方面进行探讨。

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And Delores Jones-Brown is a professor in the department of law and police science at John Jay College of Criminal Justice in New York.

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"Usually on the first hot night, people bust out, " said Walter Signorelli, a retired New York Police Department inspector who is now a professor of police science at John Jay College of Criminal Justice.

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At his trial, Mr Hoey's barrister accused two officers of lying, the police and Forensic Science Service of slapdash storage and labelling of exhibits, and explained the presence of Mr Hoey's DNA through innocent contamination, for example through exhibits taken from Hoey's home.

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