under的双解释义是：prep.(介词)在…下面,在…底下 in or to a lower place; directly below; covered by少于,低于 less than在…情况下,在…过程中 in the state of; in the process of在…管辖下,在…影响下 controlled by; being affected by。under的词语用法是prep.(介词)under表示静止的空间位置时,意思是“在…的正下方”“在…的下面”; 也可指在某物的脚边或底下,即“在…底下”“在…脚下”; 还可指在人身体某部位之下; 有时还可引申表示“在…遮蔽〔保护〕之下”。under的意思是prep.低于；在 ... 下；在 ... 内；在 ... 控制下；adv.在昏迷中；在 ... 下；adj.下面的；从属的；少于的。
一、详尽释义点此查看under的详细内容
二、双解释义
三、词典解释
1.在…下面；在…下方；在…底下
If a person or thing isunder something, they are at a lower level than that thing, and may be covered or hidden by it.
e.g. They found a labyrinth of tunnelsunder the ground.
他们发现了一处迷宫似的地道。
e.g. ...swimming in the pool or lyingunder an umbrella...
在泳池里游泳或躺在阳伞底下
2.在（水面）之下；在（水）里
In a place such as a sea, river, or swimming pool, if someone or something isunder the water, they are fully in the water and covered by it.
under的解释
e.g. They said he'd been heldunder the water and drowned...
他们说他被按到水里淹死了。
e.g. Goldfish were swimming lazily in a group justunder the surface.
金鱼聚在一起贴着水面懒洋洋地游着。
3.经由…的底下
If you gounder something, you move from one side to the other of something that is at a higher level than you.
under的意思
e.g. He wentunder a brick arch...
他穿过一个砖砌的拱门。
e.g. A river boat passedunder the bridge.
一条内河船从桥下经过。
4.在（尤指一层衣服）的里面（或底下)
Something that isunder a layer of something, especially clothing, is covered by that layer.
e.g. I was wearing two sweatersunder the green army jacket...
我在绿军装里套了两件毛线衫。
e.g. He had no shirt onunder his thin jumper...
他在薄套头衫里面没有穿衬衣。
5.受…影响；经历
You can useunder before a noun to indicate that a person or thing is being affected by something or is going through a particular process.
e.g. ...fishermen whose livelihoods areunder threat...
生计受到威胁的渔夫
e.g. I'm rarelyunder pressure and my co-workers are always nice to me...
我很少感受到压力，同事们一直对我很好。
6.在（…情况或条件）下
If something happensunder particular circumstances or conditions, it happens when those circumstances or conditions exist.
e.g. His best friend was killed by policeunder extremely questionable circumstances...
他最好的朋友在极其可疑的情况下被警察打死了。
e.g. Under normal conditions, only about 20 to 40 per cent of vitamin E is absorbed...
正常情况下，仅有20%到40%的维生素E会被吸收。
7.根据，按照，依照（法律、协定、制度等）
If something happensunder a law, agreement, or system, it happens because that law, agreement, or system says that it should happen.
e.g. Under law, your employer has the right to hire a temporary worker to replace you...
根据法律规定，你的雇主有权雇用一名临时工来代替你。
e.g. We believe an offence was committedunder EU regulations...
我们认为根据欧盟有关规定已经构成了犯罪。
8.在（…领导）下；在（…当政）期间；在（…统治）之下
If something happensunder a particular person or government, it happens when that person or government is in power.
e.g. There would be no new taxesunder his leadership.
在他主政期间不会增加新税种。
e.g. ...the realities of lifeunder a brutal dictatorship...
残暴的独裁统治下的生活现实
9.在…指导下(学习)；在…手下(工作)
If you study or workunder a particular person, that person teaches you or tells you what to do.
e.g. Kiefer was just one of the artists who had studiedunder Beuys in the early Sixties...
基弗只是60年代早期师从博伊斯的艺术家之一。
e.g. General Lewis Hyde had servedunder General 'Billy' Mitchell...
刘易斯·海德将军曾是“比利”·米切尔将军的部下。
10.用（…之名）；以（…的名义）；假借（…之名）
If you do somethingunder a particular name, you use that name instead of your real name.
e.g. Were any of your books publishedunder the name Amanda Fairchild?...
你们所出版的书里有署名为阿曼达·费尔柴尔德的吗？
e.g. The patient was registeredunder a false name.
那位患者挂号时用了假名。
11.在…之下；在…部分里
You useunder to say which section of a list, book, or system something is in.
e.g. This study is describedunder 'General Diseases of the Eye'...
“普通眼科疾病”这一部分里对该项研究作了描述。
e.g. ...a parental rights orderunder section 4 of the Family Law Reform Act...
《家庭法改革法案》第4款中有关父母权利的规定
12.（年龄或数量）不足，低于，在…以下
If something or someone isunder a particular age or amount, they are less than that age or amount.
under
e.g. ...jobs for thoseunder 65...
适合65岁以下人群从事的工作
e.g. Nearly half of mothers with childrenunder five have a job...
孩子不满5岁的妈妈中近一半有工作。
四、例句
The watch cannot be sold for under 100 yuan.
这块表低于100元不卖。
The total is under what was expected.
总数低于预计数。
No one under the rank of captain may enter the room.
级别低于上尉者禁止入内。
Many children under five go to nursery school.
5岁以下的许多儿童都上幼儿园。
She sat very still under the tree.
她在树底下静静地坐着。
The swallows nested under the eaves.
燕子在屋檐下筑巢。
The machine is still under warranty.
这台机器仍在保修期内
Life is better under the previous regime.
在前一段统治期内生活较好。
Opium is classed under the head of narcotics.
鸦片归在麻醉品项内。
He's very much under the influence of the older boys.
那些比他大的男孩对他影响很大。
He kept the situation under control.
他把情势控制下来。
I will pay nothing under compulsion.
在强迫之下我分文也不愿付。
She felt herself going under.
她感到渐渐失去了知觉。
If you take a deep breath you can stay under for more than a minute.
只要深吸一口气就能在水里待上一分多钟。
The ship went under on its first voyage.
那条船在首次航行时就沉没了。
Can you see the under layer?
你能看到下面那层吗？
五、词汇搭配
六、情景对话
Get under one’s skin-(使烦躁；（因为爱）使不安)
A：Mary has really gottenunder my skin.
玛丽真让我心烦。
B：I know what love is. When I was young, I felt the same way.
我知道爱情是什么。我年轻时，也有这种感觉。
A：It thinks I’m crazy about her.
我快要为她痴狂了。
B：You are, why not ask for a date?
快了。为什么不约她？
秘密
A：I have something to confess.
我有件事要坦白。
under的翻译
B：What is it?
什么事呀?
A：I think she’s pregnant! Just make sure to keep itunder your hat.
我觉得她怀孕了！你可要保守秘密啊！
B：Really? Didn’t she know about it?
真的吗?难道她不知道?
A：You can’t tell anyone.
你不能告诉任何人。
B：I promise.
我保证。
求职面试
B：Are you a multi-tasked individual？/ Do you work wellunder stress or pressure？
你是一位可以同时承担数项工作的人吗？/你能承受工作上的压力吗?
under什么意思
A：Yes, I think so.The trait is needed in my current/ previous position and I know I can handle it well.
是的。这种特点就是我目前/先前工作所需要的，我知道我能应付自如。
七、词源解说
under的相关近义词
below、beneath、underneath、lower、nether、through、down、in
under的相关反义词
under的相关临近词
undercover、undefined、underw、undern、Undery、underdo、Underup、undersea、undertip、underwit、undertax、undersow