echo
/ˈɛkoʊ/
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n./v. 回聲；回音；回響
- The hikers shouted into the valley and heard their echo a few seconds later. 登山客對著山谷大喊，幾秒鐘後聽到了回聲。
其他意思
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n. 回聲, 迴音
An echo is a sound which is caused by a noise being reflected off a surface such as a wall.
- He listened and heard nothing but the echoes of his own voice dying in the cave.
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v. 發出回聲
重複If a sound echoes, it is a reflected off a surface and can be heard again after the original sound has stopped.
- His feet echoed on the bare board floor
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