明沟: open drain; open channel; kennel; seugh; seuch; sewer (地面排水沟); ditch; gutter; open ditch; open trench◇明沟排水 open ditch drainage; open drainage; drainage by open channel; surface drain
明沟排水: drainage in the openexternal drainagegutter drainageopen cut drainageopen ditch drainageopen drainagesurface drainage