Biotechnology is a science that understands the mechanisms of life and utilizes them.

He is an expert in nuclear physics.

My brother is a famous biologist.

He is interested in paleozoology.

He received a heavy penalty for that crime.

Kei gave a wonderful speech.

Kei is a very wise person.

I spent some break time at the park.

He was longing for his distant hometown.

He inherited the company from his father.