My stationery is in the desk drawer.

The diagonal elements of this matrix are all 1.

He is a person who is both academically and physically talented.

In order to find the least common denominator, you need to find the multiples of all denominators.

Cell division is one of the basic processes of life.

He has a deep interest in art and culture.

Nuclear fission is a powerful phenomenon that generates energy.

He observed the stars using a sextant for navigation.

We conducted a spectral analysis to investigate the spectral characteristics of this substance.

Stephen is my best friend.