ambu facepiece

例句：

1. 1. The patient was given a local anesthetic to numb the area before surgery.
   患者在接受手术前接受了局部麻醉以麻木该区域。
2. 2. The doctor administered an anesthetic to ensure the patient's comfort during the procedure.
   医生给病人使用了麻醉剂以确保在手术过程中患者的舒适。
3. 3. Narcotic drugs are highly addictive and can lead to serious health problems if not used properly.
   麻醉药物高度成瘾，如果使用不当可能会导致严重的健康问题。