There had been no indication of either breathlessness or any loss of mental faculties right until his death.

直到去世，他既没有出现呼吸困难也没有脑功能丧失的迹象。

《柯林斯英汉双解大词典》

By the age of 40, some people are already experiencing breathlessness.

到40岁时，有些人已经感到气绝。

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Heartburn and breathlessness are pregnancy symptoms usually mentioned in passing as an afterthought.

事后想来，胃部灼热和呼吸困难是怀孕过程中经常被提到的症状。

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This relieves the symptoms of extreme breathlessness and fatigue associated with severe heart failure.

BBC: Image of heart failure

Such breathlessness (complete with mixed metaphors) is an occupational hazard in the world of electronic commerce.

ECONOMIST: Eventually, bigger means different

They said hundreds of thousands of people would face pain, depression, anxiety, confusion, fatigue and breathlessness before they died.

BBC: End of life rethink 'is needed'