Firefighters battled to save a historic building after arsonists set it alight.消防队员奋力扑灭被纵火犯点燃的一座历史建筑。Police believe the fire was started by arsonists.警方认为这起火灾是有人蓄意纵火。The factory was destroyed in a fire started by arsonists.工厂被纵火犯放火烧毁了。The superintendent issued orders to shoot looters and arsonists on sight.警司发布命令,一见到抢劫者和纵火者就开枪。