灌溉,沖洗
Irrigation \Ir`ri*ga"tion\, n. [L. irrigatio: cf. F. irrigation.] The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nourishing plants.
irrigation n 1: supplying dry land with water by means of ditches etc 2: (medicine) cleaning a wound or body organ by flushing or washing out with water or a medicated solution