echo /'ek??/ n. 回响；回声；回音:

击收听音频跟读 ↓↓↓ ↓↓↓ ↓↓↓

例句/词组:

There was an echo on the line and I couldn't hear clearly.

电话里有回音,我听不清楚。

英语解释：

the reflecting of sound off a wall or inside a confined space so that a noise appears to be repeated; a sound that is reflected back in this way 回响；回声；回音:

注：一词多义，单词一次只记一种意思即可。