1、Doctors often use xylocaine to numb the area before performing a minor surgery.
医生在进行小型手术前常常使用林丁苯乙酸盐来使局部麻木。
2、The dentist injected xylocaine into my gums before extracting the tooth.
牙医在拔牙之前向我的牙龈注射了局部麻醉药。