desensitizer

例句：

1. 1. This desensitizer helps to reduce the skin's sensitivity to allergens.
   这种脱敏剂有助于减少皮肤对过敏原的敏感性。
2. 2.The patient was given a small dose of this desensitizer before the surgery.
   患者在手术前接受了一小剂量的这种脱敏剂。
3. 3.The doctor prescribed this desensitizer for the patient's severe allergies.
   医生为患者开了这种脱敏剂，以治疗其严重的过敏反应。