- cause the water or other liquid in (something) to run out, leaving it empty, dry, or drier排去…中的水（或其他液体）：
we drained the swimming pool.
我们排干了游泳池中的水。
- cause or allow (liquid) to run off or out of something排去（液体）：
fry the pork and drain off any excess fat.
把猪肉煎一煎, 除去多余的油脂。
- make (land) drier by providing channels for water to flow away in给（土地）排水：
the land was drained and the boggy ground reclaimed.
地里的水被排干了, 沼泽地被开垦了出来。
- (of a river) carry off the superfluous water from (a district)（河流）带走（某地区）多余的水：
the stream drains a wide moorland above the waterfall.
小溪带走了瀑布上方一块宽阔沼泽地里多余的水。
- no obj., with adverbial of direction(of water or another liquid) flow away from, out of, or into something（水或其他液体）流掉, 流走; 流入, 注入：
the river drains into the Pacific
这条河流注入太平洋
figurative 〈喻〉Polly felt the blood drain from her face.
波利感到血在她的脸上流淌。
- no obj. become dry or drier as liquid runs off or away变干; 滴干：
dishes left to drain
放在那里晾干的碟子
the plant should be watered well and allowed to drain.
这种植物应该浇透并让其自行滴干。
- (of a person) drink the entire contents of (a glass or other container)喝干, 喝光（杯子等）中的液体：
he seized the Scotch set before him and drained it.
他抓起面前的苏格兰威士忌一饮而尽。
- no obj., with adverbial figurative (of a feeling or emotion) become progressively less strongly felt〈喻〉（感觉, 感情）渐渐消失, 减少, 变淡：
gradually the tension and stress drained away.
紧张和压力逐渐消失了。
- deprive of strength or vitality使精疲力竭, 使无精打采：
his limbs were drained of all energy
他四肢瘫软, 一点力气也没有了
Ruth slumped down in her seat, drained by all that had happened.
鲁思倒在了椅子里, 所发生的一切让她精疲力竭。
- cause (money, energy, or another valuable resource) to be lost, wasted, or used up使（钱、精力等）失去, 消耗, 用光：
my mother's hospital bills are draining my income.
母亲的医疗费正在把我的收入消耗殆尽。
- no obj., with adverbial(of such a resource) be lost, wasted, or used up失去, 被消耗掉, 被用光：
votes and campaign funds drained away from the Republican candidate.
共和党候选人的选票和竞选经费在流失。
- Golf,informal (of a player) hole (a putt)【高尔夫】〈非正式〉 将（球）轻击入穴。
- a channel or pipe carrying off surplus liquid, especially rainwater or liquid waste排水沟; 下水道; 阴沟; 排水管。
- a tube for drawing off accumulating fluid from a body cavity or an abscess（用于从体腔或脓肿中抽去积液的）引流管; 导（液）管。
- Brit. a frame of metal bars set in a road over the opening to a rainwater channel〈英〉（下水道开口处的）雨水篦子。
- Electronics the part of a field-effect transistor to which the charge carriers flow after passing the gate【电子】（场效应晶体管的）漏极。
- in sing. a thing that uses up a particular resource使资源枯竭的东西; 负担：
nuclear power is a serious drain on the public purse.
核动力是国库的一个沉重负担。
- the continuous loss or expenditure of a particular resource（不断的）流失, 外流, 消耗：
the drain of talented staff to the United States.
人才的流失到美国。
go down the drain
- informal be totally wasted〈非正式〉被浪费掉, 化为乌有：
the government must stop public money going down the drain.
政府必须制止公款的浪费。