音标发音英式音标 [ˌfɜːstˈeɪ.dər]美式音标 [ˌfɝːstˈeɪ.dɚ]英式发音 美式发音 基本解释急救员。同根派生 英汉例句noun [ C ]How many first-aiders are there in your office? 你们办事处有多少名急救员？英英字典剑桥英英字典 someone who is trained to give first aid