accidents事故
accidentn.事故;意外;偶然;造化
Accident expefiencn事故教训
Accident Management事故营理
accident prevention事故预防
accident recurrence事故再现
accident and health事故与健康
accidents causation事故致因
accident psychology事故心理
accident statistics事故统计学
accident processing事故处理
accident conditions事故情况