The government is building a nationwide surveillance network.

He was deeply involved in the project.

He is deeply involved in the project.

The author's message is written on the opening page of this book.

I live in the Kanto region.

Scutum is one of the smallest constellations in the night sky.

In this area, the technique of vertical netting has been passed down from ancient times.

The shaft of this building is very narrow.

Her fingernails were very smooth and beautiful.

The balance of horizontal and vertical in this picture is perfect.