From his work with patients, Freud was eventually led to develop a more and more sophisticated theory of the human psyche which became increasingly understood according to a developmental model.

• 从与病人的工作中，弗洛伊德最终逐渐发展了一套越来越深奥的关于人心理的理论。按照发展模式，这套理论逐渐被越来越多的人所理解。