我们出去呼吸一些新鲜空气吧。

Let's go outside and get some ___fresh ___air.

我认为去乡村享受大量的新鲜空气更好。

I think it's better to go to the countryside and enjoy lots of ___fresh ___air.

在室内待了一整天后，我需要一些新鲜空气。

After being indoors all day, I need some ___fresh ___air.