His words echoed flatly in the big open space.

His deep voice echoed flatly off the snow-covered slopes of the vale.

My shout echoed flatly back from the nearby rocks.

The voice from the freighter echoed flatly through their speakers.

Their footsteps echoed flatly back from the surrounding buildings, eerily loud in the quiet.

Halfway around the world from its origin, the voice echoed flatly from the dome's walls.

His voice carried, echoing flatly off the water, in spite of the wind.

Somewhere in the distance an explosion echoed flatly on the calm air, and Dwyer sat up quickly.

Voices echoed flatly down the long hall.

He banged it, and heard it echo flatly inside the house.