Doctor is an academic title that originates from the Latin word of the same spelling and meaning. The word is originally an agentive noun of the Latin verb docēre [d??ke?r?] 'to teach'. It has been used as an academic title in Europe since the 13th century, when the first doctorates were awarded at the University of Bologna and the University of Paris.

Doctor是一個(gè)學(xué)術(shù)頭銜，起源于拼寫和意思都和它一樣的拉丁詞。這個(gè)詞最初是拉丁語(yǔ)動(dòng)詞docēre [d?ke r?]“教”的施動(dòng)名詞。自13世紀(jì)博洛尼亞大學(xué)(University of Bologna)和巴黎大學(xué)(University of Paris)授予第一批博士學(xué)位以來(lái)，這個(gè)頭銜在歐洲一直被用作學(xué)術(shù)頭銜。

Having become established in European universities, this usage spread around the world. Contracted "Dr" or "Dr.", it is used as a designation for a person who has obtained a doctorate (e.g., PhD). 

這種用法在歐洲的大學(xué)里確立，并在世界各地傳播開來(lái)?？s寫的“Dr”或“Dr.”，是對(duì)獲得博士學(xué)位(如PhD，Doctor of Philosophy)的人的稱呼。

It is until the early 19th century the physician started using the doctor title, regardless whether they hold the doctorate or not (including MBBS and MD holder in other countries beside US that hold only bachelors degree level of education). This matter has already been brought to WHO, that decides the title doctor granted to them (including Dentist, Vets) as honorary calling because of their job contribution. 

直到19世紀(jì)早期，doctor才開始被用作醫(yī)生頭銜，無(wú)論他們是否擁有博士學(xué)位(包括除了美國(guó)以外擁有學(xué)士學(xué)位的醫(yī)學(xué)畢業(yè)生)。這一情況由世衛(wèi)組織研究，決定因醫(yī)生有巨大工作貢獻(xiàn)而授予他們doctor(包括牙醫(yī)、獸醫(yī))的榮譽(yù)稱號(hào)。