短語詞組短語improvement by narrowing channel 縮窄整治drainage by open channel 明渠排水;集水麪積;明排水by -channel 分流河道;支渠;旁通水道by pass channel 旁路直通by other channel 通過其他渠道by wash channel 排水槽water conveyance by river channel 河道輸水heat absorbed by evaporation channel 熱溝Extreme Weather by Discovery Channel 發(fā)現(xiàn)Extreme Weather by Science Channel 自然 返回 by channel