4周搞定2000+托福核心词
反射
echo
常考释义
Echolocation is pretty self-explanatory; using echoes reflected sound waves to locate things.
回声定位其实就不言自明了，就是用回声反射声波来定位事物。
来源于：听力OFFICIAL7 L2n. 回响；回声；回音
There was an echo on the line and I couldn't hear clearly.
电话里有回音，我听不清楚。
You've all had the experience of hearing an echo.
你们都有听到回声的体验。
来自《生物医学工程探索第21集》
图片源自网络
Echolocation is pretty self-explanatory; using echoes reflected sound waves to locate things.
回声定位其实就不言自明了，就是用回声反射声波来定位事物。
来源于：听力OFFICIAL7 L3So, anyway, as I were saying, by analyzing these echoes, the bat can determine, say, if there is wall in a cave that it needs to avoid, and how far away it is.
无论如何，正如我刚才说的，通过分析回声，蝙蝠就能知道，比如说，如果洞中有墙需要躲避，以及墙的距离有多远。
来源于：听力OFFICIAL7 L3n. 共鸣；附和；重复
His words were an echo of what she had heard many times before.
他的话是她多次听到过的话的重复。
n. 映现；暗示；启示；反响
Yesterday's crash has grim echoes of previous disasters.
昨天的撞车事故和以前的灾难令人痛心地相似。
v. 发出回声；产生回响；充满回声
The street echoed with the cries of children.
街上回荡着孩子的哭声。
v. 回响；回荡
Her footsteps echoed in the empty room.
她的脚步声在空荡荡的屋子里回响着。
v. 重复，附和（想法或看法）
This is a view echoed by many on the right of the party.
这是党内许多右翼分子都重复过的观点。
v. （尤因感到意外而）重复…话，模仿
‘He's gone! ’ Viv echoed.
“他去了！”维夫重复道。
flaw echo
缺陷回波；缺陷的回波信号；缺陷回声
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