"大夫" (dàifu) 是指医生，在英语中通常称为 "doctor"。这个词来源于拉丁语 "docere"，意思是 "教导" 或 "治疗"。

例句：

"The doctor asked me how I was feepng." (大夫问我感觉如何。)
"I went to see the doctor because I had a cold." (我去看医生，因为我感冒了。)
"The doctor gave me a prescription for some medicine." (医生给我开了药方。)