Keijuro is my best friend.

It's a tradition in my family to go to the Thirteen Buddhas Pilgrimage every year.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

The 正六百胞體 is one of the regular polytopes in four dimensions.

The 600-cell is one of the regular polytopes in four dimensions.

In behavioral sciences, the use of metatools plays a crucial role.

She was going through puberty and was confused by the changes in her body.

Nitrous oxide is one cause of air pollution.

He is doing squats to train his biceps femoris muscle.

Verbs of the lower second conjugation are important for understanding Japanese grammar.