novocain

例句：

1. 1.The dentist used a local anesthetic to numb the area before the procedure.
   牙医在手术前使用了局部麻醉剂来麻木区域。
2. 2. The patient was given eucaine for the pain relief.
   患者被给予局部麻醉剂以缓解疼痛。
3. 3.During the operation, the doctor used novocain to numb the patient's mouth and gums.
   手术期间，医生使用局部麻醉剂来麻木患者的口腔和牙龈。