He is an expert in dynamics.

He is passionate about his research in futurology.

She went to school in her new school uniform.

He is majoring in Sinology at university.

He said he couldn't agree with the views of the revisionists.

He is good at solving technical problems.

He always has an optimistic attitude.

His music is very avant-garde, and some people might not understand it.

He is facing economic problems.

This word is etymologically derived from Latin.