They leapt into action immediately.

他们立即断然采取了行动。

《牛津词典》

Firefighters took action immediately to stop the blaze spreading.

消防队员立即采取了行动制止大火蔓延。

《牛津词典》

Once we decide to share with others, we should take action immediately.

一旦我们决定与他人分享，我们应该立即采取行动。

youdao

If you could look inside a pre-synaptic axon terminal, you would find one of the characteristics is that it's loaded with these vesicles and they're just sitting there waiting to receive an action potential so that they can immediately dump their contents.

如果你能够一窥突触前的轴突末梢内部,你将会发现一个共同特征,神经递质都装载在小泡中,时刻准备着等待动作电位激活,以便迅速释放其内含物

耶鲁公开课 - 生物医学工程探索课程节选

His replacement, birthday boy James Tomkins, was called immediately into action to punt clear Reid's effort and soon after he saw his header flash wide.

BBC: Sunderland 2-1 West Ham

BlackBerry 10 provides an ideal platform for social apps such as WhatsApp Messenger to fully leverage innovative new features like BlackBerry Flow, where apps work together, sharing information with each other to quickly lead the customer intuitively to the information they need and to give them the ability to immediately take action.

ENGADGET: WhatsApp lands on BlackBerry 10, offers Z10 owners a BBM alternative

Brown's replacement Bartram was immediately called into action twice saving from Dougie Freedman efforts.

BBC: Palace peg back Gills