A person, especially one who is not a licensed physician, who sets broken or dislocated bones.

正骨师，接骨师：接断骨或正骨的人，尤指非执业医师的人。

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A doctor is a person licensed to practice medicine, as a physician, surgeon, dentist, or veterinarian.

医生是持有行医执照的人，如医生、外科医生、牙医或兽医。

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A person, especially a physician, dentist, or veterinarian, trained in the healing arts and licensed to practice.

医生，大夫受过治疗培训并持执照开业行医的人，尤其用于内科医生、牙医或兽医。

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Traditionally, the practice of medicine has been restricted to state licensed physicians and to those other health professionals who work under the aegis of the licensed physician.

FORBES: Sometimes The Best Medical Care Is Provided By Those Who Aren't M.D.s