the degree is usually a PhD, while applied professional doctorates include the Doctor of Medicine (MD), the Doctor of Education (EdD), and the Juris Doctor (JD), among others. But, you can earn a doctorate in almost any subject area. For example, most states require licensed psychologists to hold a doctorate degree in psychology. Typically a doctorate degree takes four years to complete, post-bachelor’s degree. If you already hold a master’s degree, you may be able to complete a doctorate in the same subject area with only three years of additional full-time study. 博士学位是大多数领域中最高级别的学术学位。对于研究或大学教学而言,该学位通常是博士学位,而应用专业博士学位包括医学博士(MD)、教育博士(EdD)和法学博士(JD)等等。但是,你几乎可以在任何学科领域获得博士学位。例如,大多数州要求有执照的心理学家持有心理学博士学位。 通常情况下,博士学位需要四年的时间来完成,即本科毕业后。如果你已经拥有硕士学位,你可能只需再花三年时间全职学习就能完成同一学科领域的博士学位。