under
01
在...下面, 下方
in or to a position lower than and directly beneath something
例子
The cat hid under the table when it heard a loud noise.
猫听到一声巨响后躲到了桌子下面。
例子
He hid his money under a loose floorboard.
他把钱藏在了一块松动的地板下面。
例子
He maintained professionalism under his nervousness.
他在紧张之下保持了专业性。
例子
He is under the vice president in the company's structure.
他在公司的结构中低于副总裁。
例子
Inflation stayed under 3 % for the year.
通货膨胀率全年保持在3%以下。
05
在...之下, 在...的统治下
being subject to the rule, authority, or governance of something or someone
例子
The country is under military rule.
这个国家处于军事统治之下。
5.1
在...之下, 根据
confirmed, issued, or made valid through the authority or signature of someone
例子
The agreement was ratified under the governor's hand.
该协议在州长的手下获得批准。
5.2
在...之下, 在...统治期间
within the time span or during the leadership of a particular individual or government
例子
Major reforms were introduced under the prime minister's tenure.
在首相的任期期间，进行了重大改革。
06
根据, 按照
in conformity with or following a particular standard, rule, or guideline
例子
The students must work under the guidelines provided by the instructor.
学生必须按照教师提供的指导方针工作。
例子
He cracked under interrogation.
他在审讯 下 崩溃了。
08
在...下, 属于
placed in or categorized within a particular heading or classification
例子
The product is under the electronics section in the store.
该产品在商店的电子部分下。
8.1
在...之下, 用
using a particular name, alias, or designation
例子
The artist worked under several pseudonyms.
这位艺术家以几个化名工作。
8.2
在...下, 在...框架内
(in computing) operating within the framework or system of a specified computer environment
例子
This software operates under Linux.
该软件在Linux 下运行。
09
在...过程中, 在...之下
being in the process of a particular action, treatment, or change
例子
He is currently under medical treatment.
他目前正在接受医疗治疗。
9.1
在...之下, 在...中
existing within a particular condition or situation
例子
The country remains under economic sanctions.
该国仍然处于经济制裁之下。
10
在...之下, 种植着特定作物
cultivated with a particular crop or vegetation
例子
Several acres are under corn.
几英亩土地种着玉米。
11
在...之下, 出生于...之下
born during the astrological time associated with a specific zodiac sign
例子
Artists born under Pisces are said to be very creative.
据说在双鱼座出生的艺术家非常有创造力。
12
在...之下, 由...驱动
moved or driven by a particular mode of propulsion
例子
The vessel drifted under sail.
船在帆下漂流。
under
01
下面, 下方
at or to a position directly beneath or lower than something
例子
He ducked quickly under to avoid the swinging branch.
他迅速低下身子以避免摇摆的树枝。
02
下面, 在下面
into a position where something is buried, hidden, or covered by something else
例子
Their supplies were trapped under after the landslide.
山体滑坡后，他们的物资被埋在了下面。
03
下, 下面
downward beyond the horizon or out of sight
例子
They watched the moon sink under in the early dawn.
他们看着月亮在黎明时分沉下地平线。
04
下, 水下
below the surface of water
例子
He held his breath and swam under to retrieve the lost ring.
他屏住呼吸，游到水下去取回丢失的戒指。
例子
Children four and under enter the museum for free.
四岁及以下的儿童可免费进入博物馆。
06
下, 麻醉
into a state of being unaware or insensible, especially from anesthesia or exhaustion
例子
The blow to the head knocked him under instantly.
头部的一击立刻让他失去知觉。
07
下, 之下
into a state of being controlled, governed, or subordinate
例子
They brought the unruly region under within months.
他们在几个月内将难以驾驭的地区置于控制之下。
08
倒下, 崩溃
into a state of collapse, destruction, or failure
例子
The storm took several fishing vessels under.
风暴使几艘渔船沉没。
under
01
下面的, 底部
located on or forming the bottom side or surface of something
例子
They painted the under frame of the table to prevent rust.
他们给桌子的下框架涂了漆以防止生锈。
02
麻醉中, 无意识的
in a state of being rendered insensible or unconscious, especially by medical anesthesia
例子
She was under for the entire operation.
她在整个手术过程中都处于麻醉状态。
03
不足, 下
being below the expected, required, or ideal level of a specific quality
Informal例子
This batch of bread feels under compared to yesterday's.
这批面包感觉比昨天的差。
例子
The under officers reported directly to the general.
下级军官直接向将军汇报。
under-
01
下, 亚
used to indicate a position lower than or beneath something else
例子
The plumber inspected the underfloor piping for leaks.
水管工检查了地板下的管道是否有泄漏。
02
不足-, 下-
used to indicate something done to an inadequate or insufficient degree
例子
His argument was weak because it was underdeveloped.
他的论点很弱，因为它不够发达。
Under
例子
The auditor noted several minor unders in the report.
审计员在报告中指出了几处小的不足。
02
不足, 赤字
an instance of being under a required size, amount, or standard
Informal例子
The contest rules disqualified any unders caught during the tournament.
比赛规则取消了在比赛期间捕获的任何不足。
