One breath 一口气

He recited the whole poem in one breath.

他一口气背出了整篇诗。

事情过去后，我们大家都松了一口气。

We all breathed a sigh of relief when it was over.

事情总算全都过去了，她轻松地舒了一口气。

She sighed with relief that it was all over.

她倒抽了一口气，连忙用手掩着嘴。

She gasped and her hand flew to her mouth.

她一口气把蜡烛全吹灭了。

She blew out the candles at one go.