He is receiving treatment for brain radiation.

His nature is very kind.

Detailed information is needed to understand the nature of that project.

I was moved by his sincerity.

His nature is very kind.

He dreams of entering the world of entertainment.

We exist as a part of the material world.

He is deeply interested in the spiritual world.

It is reported that North Korea has conducted another nuclear bomb test.

He is looking for a proving ground to test his new theory.