local anesthetics

例句：

1. 1. The doctor used a local anesthetic to numb the area before surgery.
   医生在手术前使用局部麻醉药来麻木该区域。
2. 2.During the operation, the patient received a local anesthetic to relieve pain.
   在手术期间，患者接受了局部麻醉药以减轻疼痛。
3. 3.The anesthesiologist administered a local anesthetic to ensure the patient's comfort during the procedure.
   麻醉师给患者注射了局部麻醉药以确保他们在手术过程中感到舒适。