under

under
preposition

extending or directly below
在…底部
vast stores of gas under the North Sea.
北海海底蕴藏着的大量天然气。
the streams that ran under the melting glaciers.
融化冰河下流淌的小溪。
■below (something covering or protecting)
在（覆盖保护物）下面
under several feet of water.
在数英尺水下面。
a hot plate under an insulated lid.
绝缘层下的加热板。
at a lower level or layer than
在…下面
the room under his study.
他书房下面的房间。
■behind (a physical surface)
在（有形表面）的后面
it was written on the new canvas under a gluey coating.
写在一块新油画布上涂胶层后面。
■behind or hidden behind (an appearance)
在（外表）的后面
he had a deep sense of fun under his quiet exterior.
在他文静外表后面是深深的乐趣追求。
■lower in grade or rank than
（职务，级别）低于
under him in the hierarchy.
等级制度中在他以下。
used to express dominance or control
受制于
I was under his spell.
我受制于他的魔力。
■during (a specified time period)
在…期间
the coinage standard was reformed under Elizabeth I.
硬币制在伊丽莎白一世时期被改革。
■as a reaction to or undergoing the pressure of (something)
承受着；在…的重压下
the sofa creaked under his weight.
沙发在他的重压下吱吱作响。
certain institutions may be under threat.
某些制度可能受到威胁。
■as provided for by the rules of; in accordance with
根据…规定
flowers supplied under contract by a local florist.
由当地一花商按合同供应的鲜花。
■used to express grouping or classification
属于
file it under ‘lost’.
将它归在“遗失”项目下。
published under his own name.
用他自己名字出版。
■(Computing)within the environment of (a particular operating system)
(计算机)在（某个系统）下
the program runs under DOS.
该程序在DOS系统下运行。
lower than (a specified amount, rate, or norm)
低于（特定数量，比例，标准等）
they averaged just under 2.8 per cent.
他们平均不到2.8%。
undergoing (a process)
在（过程）中
under construction.
建设中。
■in an existent state of
在…生存条件下
children living under difficult circumstances.
生活在艰苦环境中的儿童。
■planted with
栽有…
fields under wheat.
麦田。

adverb

extending or directly below something
在下面；在下方
weaving the body through the crossbars, over and under, over and under.
在单杠上上下不停转身。
under water
在水底；往水底
he was floating for some time but suddenly went under.
他在水上漂了一段时间后突然下沉。
■affected by an anaesthetic; unconscious
麻醉作用下无意识的
the operation was quick, she was only under for 15 minutes.
手术很快，她只麻醉了15分钟。

常用词组
under way

having started and making progress
在进行中
Dutch
■(of a boat) moving through the water
（船）在航行中
no time was lost in getting under way.
马上便起航了。

派生
undermost
adjective
语源

Old English, of Germanic origin: related to Dutch onder and German unter

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