The diagonal elements of this matrix are all 1.

His spirit is very strong.

He worked all night to finish the job he had begged for.

He passed away quietly.

He feels dizzy when he stands up suddenly due to orthostatic hypotension.

Astrobiology is a very interesting field of study.

He continued his journey to the west.

General relativity is a theory of physics proposed by Einstein.

He is a world-renowned biologist.

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