郑教授： 从指南和学术动向看，GOLD等国际权威已经开始为小气道“正名”。GOLD最新版定义中明确将细支气管病变列为慢阻肺的关键组成 18 ，且近年来陆续提出几个与SAD密切相关的慢阻肺早期疾病状态的概念 19 ...

Her heart pounded with excitementas she opened the letter. 她打开信件时，心跳加速，兴奋不已。 His heart raced with anticipationas he waited ...

Yes, bad weather is a fact of life. It’s a fact. Rainy days and gloomy days exist. No matter how much you prefer sunny days, ...