the sentence

4.   汽车、火车、舰船鸣笛,防空警报鸣响. Air-raid sirens and the horns of cars and fleets sound in memory of the dead.本文来自: 恒星英语学习网(www.Hxen.com) 详细出处参考:http://www.hxen.com/meitianyingyu/2008-05-21/38121.html

where is the train??