We exist as a part of the material world.

She overreacted to his words.

Nuclear reactions are used for mass production of energy.

His single word triggered a chain reaction, and everything changed.

I was surprised by his overreaction.

His body showed a rejection reaction to the transplanted organ.

There is a rumor that the cat turns into a human at night.

He changed his diet to improve his life.

This project needs digitalization.

He is dedicated to the study of immunochemistry.