单词	first responder
释义	first responderˌfirst reˈsponder noun [countable] American English a member of the police, fire, or medical services who has been specially trained to be the first person to go to a very serious accident or to an extremely dangerous and unexpected situation that must be dealt with quickly
随便看	oilcan oilcloth oiled oilfield oil-fired oil-free oiliness oil lamp oilman oil paint oil painting oil pan oil-rich oil rig oilseed rape oilskin oil slick oil tanker oil well oily oink ointment OJ Ojibwa OK!

英语词典包含52748条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。