事故: malfunction; trouble; fault; failure; mistake; accident; mishap 短语和例子造成事故 bring about an accident; 减少事故 cut down accident; 预防事故 provide against accidents; 交通事故 traffic accident; 一次事故使他双目失明
应变: 1.(应付突然发生的事情) meet an emergency 短语和例子随机应变 adjust to changing circumstances; act according to circumstances; 有应变之才 rise to the emergency; 教他们如何应变 teach them how to act in emergency2.[物理学] s
