trolleyn.手推车；<美>电车trolley launchedadj.轨道车上发射的trolley on wheels装有轮子的手推车trolley structure小车架trolley collector滑接集电器trolley wire clamp接触线夹具trolley locomotive架线式电机车,触轮式电气机车trolley wire guard电机车架空线保护trolley-sickness晕车(病)trolley bus trailer无轨电车的拖车trolley-bus motor无轨电车电动机