Deep breathing: Take a deep breath. Hold it, then let it out slowly.

深呼吸：深吸一口气，屏住呼吸，再缓慢呼气。

youdao

A deep breath should be taken before each cough. The cough must be deep and prolonged, as when producing sputum from deep inside the chest.

每次咳嗽前应该大口地吸气。咳嗽时必须大力而且要持续地咳嗽，就好像使劲全力要把胸腔里的积痰咳出来一样。

youdao

A deep breath should be taken before each cough, and the cough must be deep and prolonged, as when producing sputum from deep inside the chest.

每次咳嗽前必须深深呼吸，并且每一次的咳嗽一定要深和长，就仿如要从胸膛深处咳出痰的情况一样。

youdao

As you continue with the deep breath, shift your focus to your emotions, to your feelings.

继续深呼吸的同时，将焦点转向情绪，转向感受。

哈佛公开课 - 幸福课课程节选

Take a deep breath in all the way down to your belly.

向腹部深深吸气。

哈佛公开课 - 幸福课课程节选

You do not have to wave your hands in the air if you're math phobic, but since some of you are, let me just get you all to take a deep breath.

如果你有数学恐惧症你不必举手示意,既然有人是,那么让我们深呼吸一下

耶鲁公开课 - 博弈论课程节选

They figured some were absorbed by plants, some by animals, some by water and a large portion would float free and spread themselves all around the globe in a pattern so predictable that (this is the fun part) if you take a deep breath right now, at least one of the molecules entering your lungs literally came from Caesar's last breath.

NPR: Commemorate Caesar: Take a Deep Breath!

It's like wondering how many times I take a deep breath, or look at a clock.

ENGADGET: The outrage and sadness of Google Reader's demise

"What we build here has got to be bold, " says Falwell, taking a deep breath.

FORBES: Magazine Article