Radio astronomy plays a very important role in understanding the universe.

Infrared astronomy provides a new perspective on understanding the universe.

He is an excellent doctor.

He is a famous author, and his works are loved by many readers.

Well then, I'm off.

My spouse is a doctor.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

I worship the statue of Guanyin every day.

His values are completely different from mine.

He is an expert in computer science.