His target-like way of thinking is hard to understand.

He always proactively suggests new ideas.

He likes to take a walk in the park at dusk.

He is an expert in sociolinguistics.

I am very interested in sociolinguistics.

He is a world-renowned biologist.

He is a world-renowned zoologist.

My younger brother belongs to the high school band.

He is an expert in dentistry.

This university has decided to close due to financial reasons.