I made a mistake.

His fault is unforgivable.

Hydrogen peroxide is widely used as an oxidizing agent.

We have a responsibility to make this world a better place.

He won a majority of the votes in the election.

There is a large cooling tower in this factory.

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

Please use the emergency stairs in case of a fire.

Due to the earthquake, the city declared a state of emergency.

He is conducting research on natural phenomena.