I use a microscope for biology experiments.

He is a very quiet person.

His actions are showing a portent of danger.

Let's put the leftover food in the refrigerator.

Jou changed his clothes and went out.

The Third International was a historically important organization.

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

I studied linear algebra at university.

He continues to practice in search of complete enlightenment.

The Great Kanto Earthquake occurred in 1923, and many people were affected by it.