牛痘接种员

例句：

1. 1. The veterinarian is responsible for administering vaccines to the cows.
   兽医负责给奶牛注射疫苗。
2. 2. The vaccinating process involves injecting small amounts of a weakened virus into the body.
   疫苗接种过程涉及将一种弱化的病毒小剂量注入体内。
3. 3. The vaccinating staff must follow strict safety protocols to prevent infection.
   接种工作人员必须遵循严格的安全协议，以防止感染。