Repetition of a sound by reflection of sound waves from a surface.
파생어
echoic [형] echoism [명]
예문
1. echo back a noise (소리를 반향시키다) 2. The sound of the cannon echoed around. (대포 소리가 사방에 울려 퍼졌다) 3. His voice echoed through the hall. (그의 목소리가 온 홀에 울렸다) 4. The hills echoed with the roll of thunder. (산들이 천둥으로 울렸다)
