He likes to take a walk in the park at dusk.

The Mesolithic is the era between the Paleolithic and the Neolithic.

The Bronze Age was an important period in human history.

The Azuchi-Momoyama period was a very important time in Japanese history.

The Azuchi-Momoyama period, also known as the Oda-Nobunaga period, was a very important time in Japanese history.

The Neolithic was an important period in human history.

The Paleolithic is the first era of human history.

My younger brother is nearsighted and can't see things far away.

Recently, it's become difficult for me to read the newspaper, so I might have presbyopia.

My myopia is getting worse every year.