He is traveling around the world in search of the elixir of life.

He is an expert in primatology and is engaged in the study of gorilla behavior.

This old radio uses a cold-cathode tube.

I have been to Salt Lake City.

A cooling device utilizing the principle of radiative cooling has been developed.

His behavior is a typical example of narcissism.

He is studying hard every day.

I think his soul is still lingering in this house.

The Kunrei-shiki Romanization spelling method is a common way to convert Japanese into Roman letters.

Alternating hot-cold baths have the effect of improving blood circulation in the body.