a second wind 再次崛起或继续做

当我们形容某人有 a second wind 的时候，这就是说他们恢复了精力，再次崛起或继续做什么事情。

例句

I usually feel a bit tired after lunch but get a second wind around 4pm.

Observers said Barack Obama was judged to have lost the first Presidential debate with Republican challenger Mitt Romney, but got a second wind in the second and third debate.

请注意

To throw caution to the wind 意思是把顾虑和担忧都抛在脑后，大胆的去做事。有时候也指办事欠考虑。

Sometimes you have to throw caution to the wind and go with your heart. Do what you believe in.

You know what? I'm going to throw caution to the wind and bet all my money on that racehorse. I think it's going to win.