intravenous anesthetic

例句：

1. 1.The patient was given an intravenousanesthetic to relieve the pain.
   患者被给予静脉麻醉药以缓解疼痛。
2. 2.During surgery, the patient received an intravenous anesthetic for comfort.
   在手术期间，患者接受了静脉麻醉药以获得舒适。
3. 3. The doctor administered an intravenous anesthetic to the patientbefore the operation.
   医生在手术前给患者注射了静脉麻醉药。