短语词组短語tofc trailer on flat car 平板集裝箱拖車;平板車裝運載箱拖車trailer on flat car train 平裝裝運的貨櫃掛車列車Piggyback trailer on flat car 背負式集裝箱運輸trailer -on-flat-car 掛車馱運;鉄路掛車平車 返回 trailer on flat car