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/社区急救人员
- first responder training