"Big deep breaths in through your nose and out through your mouth." Chronic obstructive pulmonary disease includes emphysema and chronic bronchitis, as well as asthmatic bronchitis.

VOA: special.2010.06.23

Take a few deep breaths in silence.

安静地深呼吸几次。

哈佛公开课 - 幸福课课程节选

Take a few deep breaths in silence.

安静地深呼吸几次。

哈佛公开课 - 幸福课课程节选