基本解释事故发生率英汉例句双语例句Steps are being taken to cut down the accident frequency rate.有关方面正在采取措施降低意外伤亡事故频率。accident frequency rate更多例句词组短语短语Fatality Accident frequency rate 亿时死亡率accident frequency rate更多词组专业释义商业意外伤亡事故频率