词汇	be off my guard
释义	be off my guard adj.未戒备着,不提防
随便看	water efficiency of canal system water efficiency of hydropower plant water efficiency of irrigation water efficiency of sprinkle Water efficiency technology water efficient water-efficient water-efficient agriculture water-efficient irrigation Water efflux water efflux flow water EIA water ejection tube water ejector water ejector pump water elasticity Water-Electricity water electricity engineering water-electricity engineering water electricity nuclear power plant water-electricity nuclear power plant water electricity stand water electric resources water electrode water electrodes