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