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

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.

每次咳嗽前做一次深呼吸，咳嗽一定要深而且长，就象从胸中咳出痰那样咳嗽。

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.

每次咳嗽前做一次深呼吸，咳嗽一定要深而且长，就象从胸中咳出痰那样咳嗽。

youdao