Chronic bronchitis is the name given to the clinical syndrome in which cough and sputum, and in some cases wheeze, have persisted or recurred frequently for a period of a year or longer.

• 慢性支气管炎是一种临床症候群的名称。在这种临床症候群中，咳嗽，咳痰，某些病例还有哮鸣音等症状，持续或经常反复发作达一年之久或更长时间。