'Let's go!' he said, springing into action.

他突然行动起来，说道：“咱们走！”

《牛津词典》

The Emergency services, the Fire Departments, the Police, hospitals, and ambulances stood by, ready to go into action.

紧急服务部门、消防部门、警察、医院和救护车已经待命，随时准备采取行动。

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Consequently, they try to convince the bearers of bad news that things aren't so bad, and that swift action can make problems go away.

结果，他们会试图说服传达坏消息的人，说情况其实没那么坏，只要迅速采取行动就能让问题消失。

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He said he had to go into action as quickly as possible -- as fast as he could move.

VOA: special.2010.03.10

I want to come back to your own experiences in this, Rick but I want just go directly to Rick, now you are the director of Outdoor Action.

稍后我们再谈一谈你在这方面的经历，那么现在我想问一下，作为户外活动项目的主任。

普林斯顿公开课 - 人性课程节选

When an action potential is initiated these ion channels go from their closed state to their open state, when they open sodium can now pass through.

当动作电位形成时,离子通道,从关闭状态转到打开状态,当通道打开时,钠离子就可以通过

耶鲁公开课 - 生物医学工程探索课程节选

Considering the strict circumstances needed, these researchers think there's a slim chance that this kind of malware could go into action easily.

ENGADGET: Georgia Tech spies on nearby keyboards with iPhone 4 accelerometer, creates spiPhone

The anti-apartheid guerrillas rarely let a week go without action.

NEWYORKER: Unreconciled

As the followers go into action with their ice picks and glittering blades and gasoline and matches, Mr. Bacon's character and an FBI cult expert played by Annie Parisse begin a race against time while the body count mounts.

WSJ: The Following on Fox; Paul Williams Still Alive on Showtime: TV Reviews by Nancy deWolf Smith