doctorand

例句：

1. 1. He is a renowned doctor and has treated many patients with success.
   他是一位著名的医生，成功地治疗了许多患者。
2. 2.She is a dedicated doctor and always puts her patients first.
   她是一位敬业的医生，总是把病人放在第一位。
3. 3. Doctors play a crucial role in healthcare and are responsible for diagnosing and treating illnesses.
   医生在医疗保健中扮演着至关重要的角色，负责诊断和治疗疾病。