过敏性

例句：

1. 1. She has an allergy to cats and is sensitive to pollen.
   她对猫过敏，对花粉也敏感。
2. 2. The new drug may cause allergies in some people.
   这种新药可能会引起某些人的过敏反应。
3. 3. The doctor advised her to avoid foods that are known to be allergenic.
   医生建议她避免那些已知会引起过敏的食物。