He believed in the ancient geocentrism.

We were all extremely astonished by his sudden resignation announcement.

I was very astonished by his surprising announcement.

This electrical appliance is made of copper wire.

He values the spirit of the samurai code.

He is known as a master of the art of tanka poetry.

He found a vortex in the water.

As a teacher, it is important to respect the teacher's duty and support the growth of students.

He is deeply interested in this field of study.

He was taught that he must not forget his duty as a son to his parents.