The most common symptoms of COPD are breathlessness (or a "need for air"), abnormal sputum (a mix of saliva and mucus in the airway), and a chronic cough.

慢性阻塞性肺病的最普遍症状是呼吸困难(或“透不过气来”)，痰(气管中唾液和粘液的混合体)出现异常，以及慢性的咳嗽。

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The most common symptoms of COPD are breathlessness (or a "need for air"), abnormal sputum (a mix of saliva and mucus in the airway), and a chronic cough.

慢性阻塞性肺病的最普遍症状是呼吸困难(或“透不过气来”)，痰(气管中唾液和粘液的混合体)出现异常，以及慢性的咳嗽。

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