under

音标发音

prep. 在……下面；在……表面下；在……的后面；（职务、级别）低于；少于；比……年轻；由……控制；根据；在……过程中；受……影响；承受着；以（某一名字）；在……项下；在（某个系统）下；在……期间；在……生存条件下；栽有；在……掌权期间；在……手下工作
adv. 在下面；在水下；少于；较年轻；在昏迷中；
adj. 较低的；下面的

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表示状态作“被…遮盖”“(在职位、权势等方面)低于或隶属于”“经受着”解。
under表示方式指身份和行为的假托,作“凭借”解; 表示环境作“在…情况下”解; 表示法规、条例的依据作“根据,按照”解。
under还可表示“骑马,乘船”。还可表示类属,作“属于…”“归于…之下”解。
under还可以表示所处的状况、条件或在进行的过程中,意思是“在…(状态)中”“在…(情况)下”。
under还可以表示数量,价格,年龄等,意思是“不足…”“不到…”“…以下”。under也可表示时间,意思是“在…(较短的)时间内”。

(LOWER POSITION) in or to a position below or lower than something else, often so that one thing covers the other
(LESS THAN) less than
(EXPERIENCING) happening during, as a result of, or according to a particular situation, event, rule, etc.
(CONTROL) controlled or governed by a particular person, organization, or force
(NAME) using a particular name, especially one that is not your real name
below the surface of something

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.
In a place such as an ocean, river, or swimming pool, if someone or something is under the water, they are fully in the water and covered by it.
Under is also an adverb.
If you go under something, you move from one side to the other of something that is at a higher level than you.
Something that is under a layer of something, especially clothing, is covered by that layer.
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.
If something happens under particular circumstances or conditions, it happens when those circumstances or conditions exist.
If something happens under a law, agreement, or system, it happens because that law, agreement, or system says that it should happen.
If something happens under a particular person or government, it happens when that person or government is in power.
If you study or work under a particular person, that person teaches you or tells you what to do.
If you do something under a particular name, you use that name instead of your real name.
You use under to say which section of a list, book, or system something is in.
If something or someone is under a particular age or amount, they are less than that age or amount.
Under is also an adverb.
under wraps&rarrsee wrap