first responder
noun🔊/ˌfɜːst rɪˈspɒndə(r)/
🔊/ˌfɜːrst rɪˈspɑːndər/
(especially North American English)a person such as a member of the police or fire department in a position to arrive first at an emergency, who has been trained to give basic medical treatment 第一反应人员（指接受过培训在紧急情况下首先到达现场施行基本救治的人，如警察或消防队员） first responder training 急救人员培训 citizen/community first responders (= members of the public who have had special training for emergencies) 公民/社区第一响应者