police和policeman有什么区别求教

police和policeman有什么区别求教 the parents are both ______(police)police和policeman 有什么区别？ the police,policeman有什么区别吗? policeman ,police officer 和police superviser三这有什么区别? policeman和police有什么区别如果说 我是个警察该怎么说 police和policeman的区别? policeman和police可数吗? police officer和policeman一个意思吧 policepoliceman和policewoman的区别 traffic police与traffic policeman 有什么区别?准确率高谢谢 警察英语怎么写?不知有一种police 和 policeman 还有其他的忘记了 at police station 和in police station 有什么区别? police officer和policeman和policemen的区别?police officer和policeman和policemen三个的区别? the police here are helpful和police here are helpful有什么区别?选择题police和the police? cop和police有什么区别? police与policeman的区别 这个题为什么用policeman,而不用polices. 题：Both my sister and my brother are____.选项有4个.A、a police B、policeman C、policewoman D、polices请用详细说明原因. police和policeman的用法怎么区分.可以说两个例句吗?