Airway hyperreactivity may occur even in patients with a history of bronchial asthma who are currently asymptomatic.
由哮喘病史，即使目前没有症状，气道高反应性也会发生。
Potential stimulants of airway hyperreactivity may include allergens, exercise, cold weather, viral infections, medicines, or mechanical airway stimulation.
引起气道高反应性的潜在因素包括变应原，锻炼，冷空气，病毒感染，某些药物，或气道的机械刺激。
Potential stimulants of airway hyperreactivity may include allergens, exercise, cold weather, viral infections, medicines, or mechanical airway stimulation.
引起气道高反应性的潜在因素包括变应原，锻炼，冷空气，病毒感染，某些药物，或气道的机械刺激。
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