A body of persons making up such a department, trained in methods of law enforcement and crime prevention and detection and given the authority to maintain the peace, safety, and order of the community.是什么意思_A body of persons making up such a department, trained in methods of law enforcement and crime prevention and detection and given the authority to maintain the peace, safety, and order of the community.在线翻译_英语_读音_用法_例句