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N-UNCOUNT
行動；措施
Action is doing something for a particular purpose.
例句
The government is taking emergency action to deal with a housing crisis...
政府正采取緊急措施解決住房危機。
What was needed, he said, was decisive action to halt what he called these savage crimes.
他說，當務之急就是采取果斷行動制止他所稱的“這些野蠻罪行”。
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N-COUNT
所做之事；行為
An action is something that you do on a particular occasion.
例句
As always, Peter had a reason for his action...
一如往常，彼得對自己的行為總有說辭。
Jack was the sort of man who did not like his actions questioned.
杰克是那種不喜歡別人質疑自己行為的人。
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N-COUNT
訴訟；起訴
To bring a legal action against someone means to bring a case against them in a court of law.
例句
Two leading law firms are to prepare legal actions against tobacco companies.
兩家很有名的律師事務所準備向煙草公司提起訴訟。
...a libel action brought by one of France's bureaucrats.
由法國的一名官員提起的誹謗訴訟
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N-UNCOUNT
（化學物質產生的）作用，效果
The action of a chemical is the way in which it works, or the effects that it has.
例句
Her description of the nature and action of poisons is amazingly accurate.
他對一些毒藥的性質和作用的描述驚人地準確。
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N-SING
激動人心（或重要）的大事
The action is all the important and exciting things that are happening in a situation.
例句
Hollywood is where the action is now.
好萊塢如今風頭正盛。
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N-UNCOUNT
戰斗；作戰
The fighting which takes place in a war can be referred to as action .
例句
Leaders in America have generally supported military action...
美國領導人普遍支持采取軍事行動。
13 soldiers were killed and 10 wounded in action.
戰斗中有13名士兵陣亡，10名士兵受傷。
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ADJ
（電影）情節驚險刺激的；動作（片）的；動作片中的
An action movie is a film in which a lot of dangerous and exciting things happen. An action hero is the main character in one of these films.
例句
Stallone wants to break away from his action-hero image.
史泰龍想要擺脫動作明星的形象。
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VERB
處理
If you action something that needs to be done, you deal with it.
例句
Documents can be actioned, or filed immediately.
文件可被立即處理或歸檔。
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PHRASE
（因受傷或損壞）不能工作，失去作用，無法運轉
If someone or something is out of action, they are injured or damaged and cannot work or be used.
例句
He's been out of action for 16 months with a serious knee injury...
由于膝部嚴重受傷，他已停工16個月。
They were trapped after the lifts went out of action.
電梯出現故障，他們被困在里面了。
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PHRASE
（通常為了賺錢或提高影響力）插手，參與
If someone wants to have a piece of the action or a slice of the action, they want to take part in an exciting activity or situation, usually in order to make money or become more important.
例句
Holiday spots have seen a dramatic revival and tourist chiefs are competing for a slice of the action.
各個度假點重又呈現出一派興旺景象，旅游業的龍頭老大們都在爭著分一杯羹。
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PHRASE
把…付諸實踐
If you put an idea or policy into action, you begin to use it or cause it to operate.
例句
They have learned the lessons of business management theory, and put them into action.
他們不僅學習了商業管理理論方面的課程，并且學以致用。