rail 是什么意思?
问题描述：
rail 是什么意思?
答
rail1KK:[]DJ:[]n.1.栏杆,扶手;围栏[C]He kept his hand on the rail as he climbed the steps.他攀上台阶时,手不离扶栏.2.(门等的)横木[C]3.铁轨[C]Hundreds of people were injured when the train went off the r...