It's true that there have been some very serious train accidents recently, but it's generally quite a safe way to travel.近来确实发生过几起非常严重的火车事故,但总的来说这还是一种较为安全的出行方式。Drug tests are a standard procedure following train accidents.发生火车事故之后,药检是一道标准的程序。He escaped from the train wreck without injury.他在这次火车事故中没有受伤。This is an anniversary that has great resonance for survivors of the train crash.火车事故周年纪念在幸存者中产生了很大的反响。