His actions are as meaningless as a rotten wood and dung wall.

In the Northern Hemisphere, summer is from June to August.

It is currently summer in the Southern Hemisphere.

We are searching for extraterrestrial life.

He is spending a lot of time on experimental research.

My salary is paid once a month.

My monthly income is 300,000 yen.

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.