I had lunch with my friends within the school.

He said, 'It's difficult to make a life,' explaining the phrase 'When a man steps over the threshold, he has seven enemies.'

He is an expert in geophysics.

I went to Chion-in in Kyoto and learned about the origin of the Jōdo sect of Buddhism.

Cell biology is the study of the structure and function of cells, which are the basic units of life.

Tetsu is my best friend.

There are many beautiful temples in Kyoto.

This room is divided by a wall.

Terbium is one of the rare earth elements.

Ytterbium is one of the rare earth elements.