The keyword doctor is analyzed as follows:

First, pronunciation

British pronunciation:/? d？ kt？ r？ l/

American pronunciation:/? dɑ？ kt？ r？ l/

Second, explain

doctor's degree

doctor's degree

Third, usage

As an adjective, it means a doctor related to a doctor's degree, such as a doctor's degree, doctoral thesis, etc.

As an adjective, doctor means doctor level, such as doctoral student.

As an adjective, doctor means doctor level, such as doctor level.

Fourth, examples

She is currently writing a doctoral thesis. )

He has a doctorate in physics. )

3. The doctoral program is highly competitive. (The doctoral program is highly competitive. )

She is studying for a doctorate in psychology. She is a candidate for a doctorate in psychology. )

This research is carried out at the doctoral level. )