He is enduring mental pressure.

We believe it is important to have corporate patriotism for the success of this company.

He received psychotherapy and got help understanding himself.

We exist as a part of the material world.

In biology, a subkingdom is one of the large units in taxonomy.

He dreams of entering the world of entertainment.

The animal kingdom is incredibly diverse, and it is said that there are still species that have not been discovered.

The animal kingdom is known for its diversity and complexity.

He was released from the suffering of this world.

Learning about the history of the frontier is important for understanding our past.