我认为我们应该立即行动。

I think that we should act now.

他决定立即行动来解决问题。

He decided to akt immediately to solve the problem.

我们不能再等待了，必须立即行动起来。

We can't wait any longer; we must take action immediately.

你不能在这个问题上犹豫不决，必须立即行动。

You can't shilly-shally on this issue; you must act immediately.

准备好立即行动。

Be ready to act at once.

快速反应,立即行动!

Rapid reaction and act immediately!

我们必须立即行动起来”。

We must act now.

如果你需要帮助，立即行动起来。

If you need help, go get it right now.

立即行动。

To take immediate action.

不出所料，当她听说卡鲁拉森林正遭受危机时，他们立即行动起来了。

It was therefore no surprise that when word got to her that Karura was under attack, they immediately sprang into action.