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N-UNCOUNT
行动；措施
Action is doing something for a particular purpose.
例句
The government is taking emergency action to deal with a housing crisis...
政府正采取紧急措施解决住房危机。
What was needed, he said, was decisive action to halt what he called these savage crimes.
他说，当务之急就是采取果断行动制止他所称的“这些野蛮罪行”。
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N-COUNT
所做之事；行为
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，彼得对自己的行为总有说辞。
Jack was the sort of man who did not like his actions questioned.
杰克是那种不喜欢别人质疑自己行为的人。
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N-COUNT
诉讼；起诉
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.
两家很有名的律师事务所准备向烟草公司提起诉讼。
...a libel action brought by one of France's bureaucrats.
由法国的一名官员提起的诽谤诉讼
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N-UNCOUNT
（化学物质产生的）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.
他对一些毒药的性质和作用的描述惊人地准确。
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N-SING
激动人心（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.
好莱坞如今风头正盛。
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N-UNCOUNT
战斗；作战
The fighting which takes place in a war can be referred to as action .
例句
Leaders in America have generally supported military action...
美国领导人普遍支持采取军事行动。
13 soldiers were killed and 10 wounded in action.
战斗中有13名士兵阵亡，10名士兵受伤。
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ADJ
（电影）情节惊险刺激的；动作（片）的；动作片中的
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.
史泰龙想要摆脱动作明星的形象。
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VERB
处理
If you action something that needs to be done, you deal with it.
例句
Documents can be actioned, or filed immediately.
文件可被立即处理或归档。
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PHRASE
（因受伤或损坏）不能工作，失去作用，无法运转
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...
由于膝部严重受伤，他已停工16个月。
They were trapped after the lifts went out of action.
电梯出现故障，他们被困在里面了。
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PHRASE
（通常为了赚钱或提高影响力）插手，参与
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.
各个度假点重又呈现出一派兴旺景象，旅游业的龙头老大们都在争着分一杯羹。
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PHRASE
把…付诸实践
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.
他们不仅学习了商业管理理论方面的课程，并且学以致用。