preservative injection

例句：

1. 1. Thedoctor administered a preservative injection totreat the patient's wound.
   医生给病人注射了防腐剂来治疗伤口。
2. 2. Duringthe operation, the anesthesiologist administered a preservative injection toensure the patient's comfort.
   在手术过程中，麻醉师给患者注射了防腐剂以确保患者的舒适。
3. 3. The pharmacist prepared the preservative injection forthe patient's recovery.
   药剂师为患者准备的防腐剂注射剂用于其康复。