1. An allergic reaction to airborne pollen. 
   对空气中花粉的过敏性反应
2. rhinitis caused by an allergic reaction. 
   过敏反应引起的鼻粘膜炎。
3. a seasonal rhinitis resulting from an allergic reaction to pollen. 
   因对花粉过敏引起的季节性鼻炎。
4. an allergic reaction that becomes apparent only hours after contact. 
   接触后几个小时表现出过敏特征。
5. inflammation of the lungs; caused by a virus or an allergic reaction. 
   肺发炎;病毒或过敏反应造成。

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