A uniform is a special set of clothes which some people, for example soldiers or the police, wear to work in and which some children wear in school. 制服
noun [具体名词]制服,校服;<非正式>穿制服的警官;(某一群体的人穿的)典型服装,特有服装;(无线电通讯)字母 U 的代码
The police wear dark blue uniforms. 警察穿深蓝色制服。
adjective [原级]全部相同的,始终如一的;制服式的
If something is uniform, it does not vary, but is even and regular throughout. 一致的