短語詞組短語subway signal system 地鉄信號(hào)系統(tǒng)subway communication system 地鉄通信傳輸系統(tǒng)subway AFC system 地鉄AFC系統(tǒng)subway operation system 地鉄運(yùn)營(yíng)系統(tǒng)subway industry system 地鉄工業(yè)躰系Subway clock system 地鉄時(shí)鍾系統(tǒng)subway ventilation system 地鉄通風(fēng)系統(tǒng)Independent Subway System 獨(dú)立地鉄系統(tǒng)negotiating the subway system 艱難地穿過地鉄 返回 subway system