He left the house a moment ago.

He left the house a short time ago.

He has a deep interest in the study of ancient Japan.

The national defense of our country is the responsibility of all of us.

He traveled various countries and learned many cultures.

He traveled to various countries and learned about their cultures.

The economic development of emerging countries is having a major impact on the world economy.

His voice echoed as an echo in the mountains.

I went to watch sumo at the Kokugikan, a sumo arena in Tokyo prefecture.

The fixation of this chair is not firm.