I'm dying for a breath of fresh air.

我真想呼吸点新鲜空气。

We'll get a breath of fresh air at lunchtime.

我们午餐时出去透透气。

I had to step outside for a breath of fresh air.

我得到外面去透口气。

Her brisk treatment of an almost taboo subject was a breath of fresh air.

她对一个几乎是禁忌话题的干脆处理令人耳目一新。