麻醉剂

例句：

1. 1. Thesurgeon used a local anesthetic tonumb the area before surgery.
   外科医生在手术前使用了局部麻醉药来麻木该区域。
2. 2. During the operation, thepatient was under general anesthesia.
   手术期间，患者处于全身麻醉状态。
3. 3.The anesthesiologist monitored thepatient's vital signs during the procedure.
   麻醉师在手术过程中监控患者的体征。