He was studying all day.

The three friends of winter are planted in his garden.

He is known as the supreme leader of that country.

In this chemical reaction, a specific isotope is produced.

She wrote her name in cursive script.

This sentence is written in bold typeface.

This pathogen is very dangerous to humans.

There is a possibility that unknown lifeforms exist on this planet.

He is deeply researching the theory of real number fields.

He saw the light through the transparent object.