That person is my friend.

He is not only an excellent doctor, but also a wonderful educator.

He is knowledgeable about human affairs.

Choosing a leader for the new project is very important.

In medical classes, we learn about the structure of the human body.

He decided to become a subject of the human experiment for the new drug.

He has many Taiwanese friends.

She is studying traditional Chinese medicine and is utilizing that knowledge.

He is an expert in psychiatry.

He is an excellent medical student.