直译是这样：
当他们从一辆起火的列车车厢 跳向正有货运列车迎面而来的轨道的时候.
完整版本：
12 people were killed and 20 injured early yesterday morning when they jumped from a burning train car into the path of an oncoming goods train in Southern China.
昨日清晨,在中国南方（发生了一起严重的铁路交通事故）.其中,12人死亡,20人受伤.事故发生原因是他们从一辆起火的列车车厢 跳向了正有货运列车迎面而来的轨道.