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VERB
做事;行動
When you act, you do something for a particular purpose.
例句
The deaths occurred when police acted to stop widespread looting and vandalism...
警方采取行動制止猖狂的打砸搶行為時有多人喪生。
I do not doubt that the bank acted properly.
我毫不懷疑銀行的處理方式是妥當的。
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VERB
遵照…行動；奉行
If you act on advice or information, you do what has been advised or suggested.
例句
A patient will usually listen to the doctor's advice and act on it.
患者通常都會遵照醫囑行事。
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VERB
舉止;表現
If someone acts in a particular way, they behave in that way.
例句
...a gang of youths who were acting suspiciously...
一伙形跡可疑的年輕人
He acted as if he hadn't heard any of it...
他表現得好像對此毫不知情。
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VERB
起作用;充當
If someone or something acts as a particular thing, they have that role or function.
例句
He acted both as the ship's surgeon and as chaplain for the men.
他在船上為水手們兼作外科醫生和牧師。
...the Cunard Princess, which acted as a support ship for American forces.
用作美軍支援船的公主號冠達郵輪
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VERB
假裝;故作
If someone acts in a particular way, they pretend to be something that they are not.
例句
Chris acted astonished as he examined the note...
克里斯檢查記錄時故作震驚狀。
Kenworthy had tried not to act the policeman.
肯沃西努力表現得不像個警察。
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VERB
代理；代表
When professionals such as lawyers act for you, or act on your behalf, they are employed by you to deal with a particular matter.
例句
...the law firm that acted for Diana during her marriage split...
在戴安娜婚姻破裂期間為她做代理的法律事務所
Because we travelled so much, Sam and I asked a broker to act on our behalf.
由于我們經常游歷在外，我和薩姆便請了一位經紀人代表我們處理事務。
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VERB
影響；作用于
If a force or substance acts on someone or something, it has a certain effect on them.
例句
He's taking a dangerous drug: it acts very fast on the central nervous system...
他正在服用一種危險的藥物：這種藥物能很快影響到中樞神經系統。
A hypnotist can act upon the unconscious mind directly.
催眠師能直接作用于無意識思維。
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VERB
表演；演（戲）；出演（角色）
If you act, or act a part in a play or film, you have a part in it.
例句
She confessed to her parents her desire to act...
她向父母坦言了自己想演戲的愿望。
She acted in her first film when she was 13 years old.
13歲時她出演了她的電影處女作。
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N-COUNT
行為；行動
An act is a single thing that someone does.
例句
Language interpretation is the whole point of the act of reading...
閱讀行為中關鍵在于對語言的理解。
My insurance excludes acts of sabotage and damage done by weapons of war.
我購買的保險對于蓄意損壞以及戰爭中武器造成的損壞不予賠償。
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N-SING
裝模作樣;裝腔作勢
If you say that someone's behaviour is an act, you mean that it does not express their real feelings.
例句
There were moments when I wondered: did she do this on purpose, was it all just a game, an act?...
有時我很困惑：她這么做是故意的嗎？難道一切都只是一場游戲，是逢場作戲？
His anger was real. It wasn't an act.
他是真的生氣了，不是在擺樣子。
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N-COUNT
法案；法令；條例
An Act is a law passed by the government.
例句
...an Act of Parliament.
議會法案
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N-COUNT
（戲劇、歌劇、芭蕾舞劇等的）幕
An act in a play, opera, or ballet is one of the main parts into which it is divided.
例句
Act II contained one of the funniest scenes I have ever witnessed...
第二幕里有我看過的最搞笑的場面之一。
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N-COUNT
（演出中的）短節目
An act in a show is a short performance which is one of several in the show.
例句
This year numerous bands are playing, as well as comedy acts...
今年除了那些搞笑短劇外，還會有眾多樂隊登臺獻藝。
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PHRASE
當場抓??；抓現行
If you catch someone in the act, you discover them doing something wrong or committing a crime.
例句
The men were caught in the act of digging up buried explosives.
那些人在挖掘掩埋的爆炸物時被逮個正著。
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PHRASE
改邪歸正；重新做人
If someone who has been behaving badly cleans up their act, they start to behave in a more acceptable or responsible way.
例句
The nation's advertisers need to clean up their act.
該國的廣告商需要規范自己的行為。
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PHRASE
（為了得到好處等）參與，插一手
If you get in on the act, you take part in or take advantage of something that was started by someone else.
例句
In the 1970s Kodak, anxious to get in on the act, launched its own instant camera.
20世紀70年代，急于分一杯羹的柯達公司推出了自己的拍立得相機。
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PHRASE
正在做…
You say that someone was in the act of doing something to indicate what they were doing when they were seen or interrupted.
例句
Ken was in the act of paying his bill when Neil came up behind him.
當尼爾從后面走過來時，肯正在付賬。
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PHRASE
全力以赴；集中精力；勁兒往一處使
If you get your act together, you organize your life or your affairs so that you are able to achieve what you want or to deal with something effectively.
例句
The Government should get its act together...
政府應該集中力量。
We have to get our act together — we have to organize ourselves.
我們必須把勁兒往一處使——我們得組織起來。