自2010年至今的四级考试中， 共出现过 次
自2010年至今的六级考试中， 共出现过 次
PREP 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.
They found a labyrinth of tunnels under the ground.
...swimming in the pool or lying under an umbrella...
PREP 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.
They said he'd been held under the water and drowned...
Goldfish were swimming lazily in a group just under the surface.
PREP 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.
He went under a brick arch...
A river boat passed under the bridge.
PREP 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.
I was wearing two sweaters under the green army jacket...
He had no shirt on under his thin jumper...
PREP 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.
...fishermen whose livelihoods are under threat...
I'm rarely under pressure and my co-workers are always nice to me...
PREP 在（…情况或条件）下 If something happens under particular circumstances or conditions, it happens when those circumstances or conditions exist.
His best friend was killed by police under extremely questionable circumstances...
Under normal conditions, only about 20 to 40 per cent of vitamin E is absorbed...
PREP 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.
Under law, your employer has the right to hire a temporary worker to replace you...
We believe an offence was committed under EU regulations...
PREP 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.
There would be no new taxes under his leadership.
...the realities of life under a brutal dictatorship...
PREP 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.
Kiefer was just one of the artists who had studied under Beuys in the early Sixties...
General Lewis Hyde had served under General 'Billy' Mitchell...
PREP 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.
Were any of your books published under the name Amanda Fairchild?...
The patient was registered under a false name.
PREP 在…之下；在…部分里 You use under to say which section of a list, book, or system something is in.
This study is described under 'General Diseases of the Eye'...
...a parental rights order under section 4 of the Family Law Reform Act...
PREP （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.
...jobs for those under 65...
Nearly half of mothers with children under five have a job...