The thunder was resounding in the distance.

When a fire broke out, the siren sounded.

Please evacuate immediately due to a fire.

It is difficult to predict the occurrence of earthquakes.

When the earthquake occurred, we evacuated immediately.

He attached a silencer to the car's engine.

Forest fires cause great damage to the natural environment.

Last night, the town was hit by a conflagration.

The fire alarm went off, so we immediately evacuated the building.

He is an expert in embryology, studying the developmental processes of many kinds of organisms.