The study of phonons is an important field in physics.

This factory is our main source of supply.

That battlefield was truly a hell of agonizing cries.

My dream is to visit the Portuguese Republic.

He is undergoing psychotherapy to overcome anthropophobia.

He joked around and used vulgar language.

I am planning to go to Tokyo next week.

Tokyo is the former eastern capital.

We need to collaborate to make this project successful.

Aika is my best friend.