柯林斯詞典asthma /??sm?/ 1. N-UNCOUNT Asthma is a lung condition that causes difficulty in breathing. 哮喘 返回 asthma劍橋詞典a medical condition that makes breathing difficult by causing the air passages to become narrow or blocked 氣喘，哮喘 an asthma sufferer 哮喘病患者 an asthma attack 哮喘病發(fā)作 返回 asthma