The ejecta from volcanoes help to elucidate the geological history of the Earth.

He was skilled in using an ancient weapon, a chain with a weight on one or both ends.

My father is an ichthyologist and has a deep knowledge about marine life.

The modernization of Japan began in the Meiji era.

Our town is going through the process of modernization.

This ring is made of pure platinum.

This soap has antibacterial effects.

She has blond hair.

Kingo is my best friend.

Kinichiro is my best friend.