anesthesia syringe

例句：

1. 1. The patient wasgiven a local anesthetic to numb the area before surgery.
   病人在手术前接受了局部麻醉以麻木该区域。
2. 2.During the operation, the surgeon used anesthesia to keep the patient unconscious.
   手术期间，外科医生使用麻醉使病人失去知觉。
3. 3. The anesthesiologist monitored the patient's vital signsduring the procedure.
   麻醉师在手术过程中监测病人的体征。