an echo of something
表示某物的回声
The cave produced an echo of my voice.
洞穴产生了我的声音的回声。
重复的话；附和；回应；共鸣；翻版；再现；余波；微小影响；厄科（希腊神话中化为回声的仙女）
a reflected sound that is heard again
初始听者再次听到的反射声。
A reflected sound that is heard again by its initial observer.
声音因反射而重复的现象
the repetition of a sound resulting from reflection of the sound waves
重复刚说过的话。
An utterance repeating what has just been said.
希腊神话中的一个仙女,被纳西索斯拒绝,最终只剩下她的声音
(Greek mythology) a nymph who was spurned by Narcissus and pined away until only her voice remained
诗歌中一行末尾的词与上一行末词谐音呼应的手法。
A device in verse in which a line ends with a word which recalls the sound of the last word of the preceding line.
重复刚刚所说内容的回复
a reply that repeats what has just been said
共鸣；回应；回答。
Sympathetic recognition; response; answer.
反映或回溯早期事物的事物。
Something that reflects or hearkens back to an earlier thing.
微不足道的间接结果；余波。
An insignificant indirect result; a ripple.
命令行中显示刚执行的命令。
The displaying on the command line of the command that has just been executed.
使用echomail系统的个人讨论论坛。
An individual discussion forum using the echomail system.
桥牌中与将牌信号相同,由持有四张以上将牌(或某些玩法中正好三张)者在同伴领出将牌或示意将牌时打出的信号。
A signal, played in the same manner as a trump signal, made by a player who holds four or more trumps (or, as played by some, exactly three trumps) and whose partner has led trumps or signalled for trumps.
同伴领出某花色大牌时表示该花色所持张数的信号。
A signal showing the number held of a plain suit when a high card in that suit is led by one's partner.
反犹太主义的标点符号或标记(((()))),置于姓名或短语周围以表示该人为犹太人或该实体由犹太人控制；或被重新采用以自豪地表明自己的犹太身份或对犹太人的支持。
An antisemitic punctuation symbol or marking, ((( ))), placed around a name or phrase to indicate the person is Jewish or the entity is controlled by Jewish people; or repurposed or reclaimed to proudly declare one's Jewishness or solidarity with Jews.
I heard an echo of my voice in the empty cave.
我在空荡的山洞里听到了自己声音的回声。
用法提示：这里'echo'是名词，意为'回声'，表示声音反射后重复出现。
AI contextual example
The canyon produced a loud echo when I shouted.
当我喊叫时，峡谷产生了响亮的回声。
用法提示：这里'echo'是名词，表示从峡谷反射回来的声音。
AI contextual example
The echoes of the concert lasted for a few seconds in the hall.
音乐会的回音在大厅里持续了几秒钟。
用法提示：这里'echoes'是'echo'的复数形式，表示多次反射的声音。
AI contextual example
表示某物的回声
The cave produced an echo of my voice.
洞穴产生了我的声音的回声。
We could hear the echo from the canyon.
我们能听到从峡谷传来的回声。
常见搭配，强调感知回声
Did you hear an echo in the hall?
你听到大厅里有回声吗？
比 echo 更强调多次反射和持续效果；常用于正式或文学描述
物理术语，侧重声波返回的现象；日常使用较少
侧重声音增强或延长，而非简单重复；常用于声学或音乐
grammar · medium
易错句子There were many echos.
正确表达There were many echoes.
echo的复数形式是echoes，不是echos。中文学习者常将不规则复数误拼为规则形式。
grammar · medium
易错句子I heard a lot of echo.
正确表达I heard a lot of echoes.
echo是可数名词，表示多次回声时应使用复数。中文里'回声'可以指整体，但英文中需要根据语境区分单复数。
作名词时指无回声或无声状态
echo 强调声音反射后清晰可辨的原音重复；reverberation 强调声音在封闭空间内多次反射后的持续混响效果
echo 指声音被反射回来；resonance 指物体因频率匹配而振动增强，不一定是反射声音
echo 特指声音被反射回来的现象；reflection 可指光、热、声音等的反射，且更常用于光学
回音室
The sound in the empty hall created an echo chamber effect.
空荡荡的大厅里的声音产生了回音室效应。
回声测深仪
The ship used an echo sounder to measure the ocean depth.
那艘船使用回声测深仪测量海洋深度。
听到回声
We shouted into the canyon and heard an echo.
我们对着峡谷大喊，听到了回声。
过去的回声；往事的回响
The old building is an echo of the past.
那座老建筑是过去的回响。
在某人的耳中回响
Her words still echo in my ears.
她的话仍在我耳边回响。
echo是声音的一种现象
echo由声波反射产生
echo是声音的重复
峡谷中常产生回声
表示类似回声的持续响声
回音室（指信息或观点在封闭系统中不断重复和放大的环境）
Social media can sometimes create an echo chamber where users only hear opinions that reinforce their own.
社交媒体有时会制造一个回音室，用户只听到强化自己观点的意见。
……的回响（指对过去事物的回忆或相似再现）
The protest was an echo of the civil rights movements of the 1960s.
这次抗议是20世纪60年代民权运动的回响。
世代流传（指长久被铭记）
The philosopher's words still echo down the ages.
这位哲学家的话语至今仍世代流传。
最微小的思想种子也能成长成最强大的回声。
The smallest seed of an idea can grow into the most powerful echo.
最微小的思想种子也能成长成最强大的回声。
我是你独处时发出声音的回声。
I'm an echo of the sound that you make when you're alone.
我是你独处时发出声音的回声。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.