The power supply in this area is stable.

We took a one-hour rest.

My brother is a graduate student at the University of Tokyo.

He is participating in an elementary level Japanese class.

He has risen in social standing.

I am surprised at the quickness of this project's progress.

Earth science is an important field of study for unraveling the mysteries of nature.

He is a world-renowned researcher.

When the earthquake occurred, he took emergency measures.

He decided to suspend his studies for health reasons.