定义
an echo: 回声
Where's that echo coming from?回声来自哪里？
to echo: 重复，反射，重现，反映，模仿
I hear voices echoing in the background.我听到背景回声。
This poem echoes certain themes from the 19th century.这个诗反映了19世纪的某些主题。
- "I wait one minute while some country music echoes in the background."
- "Bruno : I know, I can hear my voice echo in the hallway."
