A：Mary has really gotten under 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。

under的意思

B：You are, why not ask for a date?
      快了。为什么不约她？

A：I have something to confess.
      我有件事要坦白。

B：What is it?
      什么事呀?

A：I think she’s pregnant! Just make sure to keep it under 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。

B：Are you a multi-tasked individual？/ Do you work well under 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?

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。

1. 在…下面；在…下方；在…底下
    If a person or thing is under 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 tunnels under the ground.
           他们发现了一处迷宫似的地道。
    e.g. ...swimming in the pool or lying under 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 is under the water, they are fully in the water and covered by it.

    e.g. They said he'd been held under 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 just under 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 go under something, you move from one side to the other of something that is at a higher level than you.

under

    e.g. He went under a brick arch...
           他穿过一个砖砌的拱门。
    e.g. A river boat passed under 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 is under a layer of something, especially clothing, is covered by that layer.

    e.g. I was wearing two sweaters under the green army jacket...
           我在绿军装里套了两件毛线衫。
    e.g. He had no shirt on under his thin jumper...
           他在薄套头衫里面没有穿衬衣。

5. 受…影响；经历
    You can use under 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 are under threat...
           生计受到威胁的渔夫
    e.g. I'm rarely under 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 happens under particular circumstances or conditions, it happens when those circumstances or conditions exist.

    e.g. His best friend was killed by police under 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 happens under 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 committed under 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 happens under a particular person or government, it happens when that person or government is in power.

under

    e.g. There would be no new taxes under his leadership.
           在他主政期间不会增加新税种。
    e.g. ...the realities of life under 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 work under a particular person, that person teaches you or tells you what to do.

    e.g. Kiefer was just one of the artists who had studied under 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 served under 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 something under a particular name, you use that name instead of your real name.

    e.g. Were any of your books published under 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 registered under a false name.
           那位患者挂号时用了假名。

11. 在…之下；在…部分里
      You use under to say which section of a list, book, or system something is in.

      e.g. This study is described under '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 order under 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 is under a particular age or amount, they are less than that age or amount.

under

      e.g. ...jobs for those under 65...
             适合65岁以下人群从事的工作
      e.g. Nearly half of mothers with children under five have a job...
             孩子不满5岁的妈妈中近一半有工作。