He is an expert in nuclear physics.

He said 'friend' as a noun ending for me.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

He is involved in the development of androids.

His eyeballs are blue and beautiful.

He said 'thank you'.

By conducting this experiment, we will verify our hypothesis.

He is studying late into the night to learn a new computer language.

Learning Modern English is important for smooth international communication.

He is interested in the study of constructed languages.