drain/drainage

drain /drein/ I.vt. & vi. 1.把(水等)排掉；（水）流掉: drain the water from the pond/drain the pond of water 从池塘里放水；drain the oil out of the crank case 把油从曲轴箱里排掉 The water will soon drain away/off. 水很快就会流掉。 2. (把…)耗费掉: His fortune was draining away. 他的财产渐告枯竭。His strength drained away. 他筋疲力尽。［考句］After four years in the same job his enthusiasm finally drained.四年同样的工作使他的热情最终消失了。 ‖II. n. ［c］ 1. 排水沟/管，下水道：block the drain 堵塞排水管；make a drain along the side of the garden 沿花园开一条排水沟 2.消耗，耗竭：the economic drain of war 战争的经济耗费Defence costs have been a heavy drain on the country’s resources. 防务开支严重地消耗该国的财力。

drainage /ˈdreinidʒ/ n. ［u］ 1. 排水系统，下水道：improve drainage 改善排水系统；the drainage of the town 这座城镇的下水道 2. 排水，放水：This lake receives the drainage of many mountain streams. 许多山溪的水流入这个湖。