自流灌溉 zìliúguàngài gravity irrigation Definitions Defs Origin Strokes Stroke Words Sentences Sents 自流灌溉 zìliúguàngài gravity irrigation Irrigation of land by allowing water to flow naturally from a higher elevation to a lower one using gravity
自流灌溉 zìliúguàngài gravity irrigation Irrigation of land by allowing water to flow naturally from a higher elevation to a lower one using gravity
