discharge sb from sth
from 后常接医院、监狱、部队或职务，表示准许离开或解除职务。
The doctors discharged him from the hospital this morning.
医生今天早上让他出院了。
履行；完成；清偿；偿付；免除；解雇；免职；开除；释放；使获释；放电；释放（电荷）
to expel or let go (gas, liquid, waste, etc.)
完成或履行义务。
To accomplish or complete, as an obligation.
免除债务、索赔、义务、责任、指控等；宣布无罪；原谅；澄清。
To free of a debt, claim, obligation, responsibility, accusation, etc.; to absolve; to acquit; to forgive; to clear.
通过付款打发(债权人)；偿还债务或履行对......的义务。
To send away (a creditor) satisfied by payment; to pay one's debt or obligation to.
撤销；废除；解雇
To set aside; to annul; to dismiss.
排出；释放
To expel or let go.
发射(导弹等)；射击
To let fly, as a missile; to shoot.
释放(积累的电荷)
To release (an accumulated charge).
解除职务；遣散
To relieve of an office or employment; to send away from service; to dismiss.
合法释放；解放
To release legally from confinement; to set at liberty.
操作(任何发射弹丸的武器,如猎枪或弹弓)
To operate (any weapon that fires a projectile, such as a shotgun or sling).
从假设列表中释放(辅助假设),并返回主论点
To release (an auxiliary assumption) from the list of assumptions used in arguments, and return to the main argument.
卸货(船只或其他运输工具)
To unload a ship or another means of transport.
卸下或移除负担；取出装载物
To put forth, or remove, as a charge or burden; to take out, as that with which anything is loaded or filled.
发出；排放
To give forth; to emit or send out.
表达；说出
To let fly; to give expression to; to utter.
漂白或通过化学过程去除或擦除
To bleach out or to remove or efface, as by a chemical process.
一般现在时
The factory discharges waste into the river.
这家工厂向河里排放废物。
一般过去时
He discharged his duties faithfully.
他忠实地履行了职责。
现在完成时
She has discharged all her debts.
她已经还清了所有债务。
规则动词，过去式和过去分词都是 discharged。
The river discharges into the ocean near the city.
这条河在城市附近流入海洋。
用法提示：discharge 作动词，意为“流出；排放”，描述液体自然流出。
The doctor discharged the patient after the operation.
医生在手术后让病人出院了。
用法提示：discharge 作动词，意为“准许离开；放出”，常用于医院语境。
He discharged his duties as treasurer with great care.
他非常认真地履行了财务主管的职责。
用法提示：discharge 作动词，意为“履行（职责）”，用于正式语境。
from 后常接医院、监狱、部队或职务，表示准许离开或解除职务。
The doctors discharged him from the hospital this morning.
医生今天早上让他出院了。
表示排放液体、气体或废料时，用 into 引出排入的地点。
The factory discharges waste into the river.
这家工厂把废料排入河中。
宾语多为 debt、obligation、duty 等，指付清债务或履行义务。
She discharged all her debts before moving abroad.
她在移居国外前清偿了所有债务。
此义指解雇、开除某人，宾语通常是雇员。
The company discharged three workers for repeated lateness.
公司因三名工人屡次迟到而解雇了他们。
最通用，可指人、动物或事物从束缚、容器中出来；比 discharge 更常用于人获释。
多用于事物或设备作主语，强调发出光、热、气味、声音等；不用于人。
强调用力排出或驱逐出组织、国家等；主语可以是人或器官，语气较强。
口语常用，可指让人、气体或液体出去；比 discharge 非正式。
grammar · medium
易错句子He discharged from the army last year.
正确表达He was discharged from the army last year.
discharge 表示“被遣散、退役”时，主语是接受动作的人，必须用被动语态 be discharged from。汉语“他去年退伍了”用主动形式表达被动含义，受此影响学习者常漏掉 be 动词。
grammar · medium
易错句子The factory discharges out dirty water into the river.
正确表达The factory discharges dirty water into the river.
discharge 本身已含“排出、排放”之义，是及物动词，后面直接接被排出的东西，不能再加 out。汉语“排放出”里的“出”并不对应英语的 out。
grammar · medium
易错句子She was discharged the hospital last Friday.
正确表达She was discharged from the hospital last Friday.
表示“准许某人离开某处”时，discharge 用 discharge sb from sth 这一搭配，被动语态中 from 仍须保留。汉语“她出院了”没有介词，学习者容易把 from 漏掉。
本反义对应“履行（义务/职责）”一义。discharge one's duty（尽职）与 neglect one's duty（失职）相对。neglect 侧重“因疏忽而未履行”，不是“故意违背”。
对应“履行”义，shirk responsibility（逃避责任）与 discharge responsibility（尽责）相对。shirk 含“偷懒、规避”的贬义。
对应“履行（义务/合同）”义，breach an obligation（违背义务）与 discharge an obligation（履行义务）相对。breach 多用于法律或正式契约语境。
对应“履行”义，abandon a responsibility（放弃责任）与 discharge a responsibility（履行责任）相对。abandon 强调彻底放弃，而非暂时疏忽。
release 宾语不限，液体、气体、光、消息、人都可以，也常指释放人或发行作品；discharge 侧重液体、气体、电荷从某处排出，语域偏技术或正式，且可与病人出院、士兵退伍等搭配。
emit 只用于光、热、声、气味这类无形之物，不能指放出液体，也不能指让人出院或让士兵退伍；discharge 的对象可以是液体、气体、电荷，也可以是人。
expel 强调用力或强制把某物排出、把人驱逐出去，宾语多为被强力排出的气体或人；discharge 语气中性，指自然或按惯例地排出、放出。
排放废料
The factory must treat the water before discharging waste into the river.
工厂在向河里排放废料之前必须先处理废水。
让病人出院
The hospital discharged the patient after the test results came back normal.
检查结果正常后，医院让病人出院了。
履行职责
She discharged her duties as treasurer with great care.
她非常认真地履行了司库的职责。
清偿债务
He finally discharged the debt he owed to his brother.
他终于清偿了欠哥哥的债。
开枪；发射枪械
The hunter accidentally discharged his firearm while climbing over the fence.
猎人翻越栅栏时不小心开了枪。
adjective
dis- (apart/away/undo) + charge (load, fill). Related words: recharge, overcharge, charge; disconnect, disappear, dislike.
医疗语境中，出院用discharge，如discharge a patient from hospital。
物理语境中，discharge指电池放电，释放储存的电能。
军事或狩猎语境中，discharge可表示发射武器。
法律或财务语境中，discharge指清偿债务或解除义务。
环保语境中，discharge指排放废水、废气等污染物。
履行职责
She discharged her duties as treasurer with great care.
她非常认真地履行了财务主管的职责。
服刑赎罪；偿还社会债务
After years in prison, he felt he had discharged his debt to society.
在狱中服刑多年后，他觉得自己已经偿还了对社会欠下的债。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.
放电
Some fish can discharge electricity to stun their prey.
有些鱼能放电来击晕猎物。