The department prohibits the use of race, colour, or ethnicity as the determinant factor for initiating police action.警局禁止以种族、肤色或民族作为出警的决定性因素。He said his ethnicity had not been important to him.他说他的种族渊源对他向来都不重要。I couldn't tell her ethnicity from her last name.我无法根据她的姓说出她是什么种族的。