The calyx of this flower is green and very beautiful.

He always speaks the truth as a character of truth.

His jawline is very attractive.

There was a large framed picture hanging in his room.

I am learning the Confucian teaching called 'Great Learning'.

He is an expert in chemistry.

Morphology, which is a part of linguistics, studies the structure of words.

He devoted his life to the study of science.

He is an expert in bibliography and has many publications.

He is deeply immersed in the study of Confucianism.