以下为句子列表：
英文: Chronic bronchitis is a condition associated with excessive tracheobronchia mucus production sufficient to cause cough with expectoration for at least 3 months of the year for more than 2 consecutive years.
中文: 由于气管、支气管粘液分泌过多，引起咳嗽咯痰，1年中至少有3个月并连续2年以上者，称为慢性支气管炎。
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