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, the cough must be repeated about every two seconds without let-up until help arrives, or until the heart is felt to be beating normally again.

在每次咳嗽前应先深呼吸，咳嗽必须不间断的、每隔2秒钟重复一次，直到救护人员抵达或者感觉心跳恢复正常为止。

youdao

A deep breath should be taken before each cough, the cough must be repeated about every two seconds without let-up until help arrives, or until the heart is felt to be beating normally again.

在每次咳嗽前应先深呼吸，咳嗽必须不间断的、每隔2秒钟重复一次，直到救护人员抵达或者感觉心跳恢复正常为止。

youdao