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

Special relativity is one of the fundamental theories of physics.

General relativity is a theory of physics proposed by Einstein.

Anuttara-samyak-sambodhi means the supreme perfect enlightenment in Buddhism.

Gidousanshi is one of the ancient Chinese official positions.

Fujiwara no Korechika, who held the title of Gidō Sanshi, was an important politician during the Heian period.

The Fertile Crescent is known as the birthplace of ancient agricultural civilizations.

The thirty-first day is my birthday.

We have our wedding on the twenty-third day of the month.

He defeated the enemy using the Thirty-Six Stratagems.