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。

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.

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他们感觉他们正在向水中呼气是因为他们在吸气前在水中作了一点点呼气动作，但太少太迟了。

They feel they are exhaling into the water because they do a little before inhalation, but that is too little too late.

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吸气并提拉你的胸骨的上部来伸展前侧躯干。

Inhale and lift through the top of the sternum to lengthen the front torso.

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