He is writing a thesis on celestial mechanics.

The government decided to crack down on illegal activities.

I want to go to Thessaloniki in Greece.

He reads five books every day.

He retracted his previous remarks.

What is the distance between Tokyo and Okinawa?

He turned thirty years old.

This picture is fixed to the frame.

This plant needs oxygen to perform photosynthesis.

In this story, Zuan is the protagonist, and his adventure continues.