I distributed materials to all participants.

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

She overreacted to his words.

Nuclear reactions are used for mass production of energy.

I was surprised by his overreaction.

His body showed a rejection reaction to the transplanted organ.

The police used tear gas against the demonstrators.

Fergus is my best friend.

He lost consciousness due to the effects of nerve gas.

We need to replace the gasket of this engine.