drainage
['dreɪ.nɪdʒ] noun uncountable
■the system of water or waste liquids flowing away from somewhere into the ground or down pipes 排水系统；排污系统•drainage channels/ditches/systems排水渠／沟／系统 ■the ability of soil to allow water to flow away 土壤排水能力•These plants need a sunny spot with good drainage.这些植物需要种植在阳光充足的地方，土壤排水能力要强。 |