柯林斯詞典police department (police departments) 1. N-COUNT-COLL A police department is an official organization which is responsible for making sure that people obey the law. 警察局[美國英語] ...the Los Angeles Police Department. ...洛杉磯警察局。 返回 police department劍橋詞典in the US, the police force in an area or city （美國某地區(qū)或城市的）警察局，警察部門 返回 police department