echoing xinchi外语
echo
英/ ?ek?? /
美/ ?eko? /
简明
柯林斯
n.回声，回音，余音绕梁；重复，附和，共鸣；相似之处，再现；回声插入；（话语结构和内容的）重复；（桥牌）回声信号
v.回响，发出回声；重复，附和cet4/cet6/考研/gre/sat
复数
echoes或echos
第三人称单数
echoes
现在分词
echoing
过去式
echoed
过去分词
echoed
网络释义
专业释义
英英释义
n.1the persistence of a sound after its source has stopped
同义词：reverberation / sound reflection / replication
2(greek mythology) a nymph who was spurned by narcissus

and pined away until only her voice remained
3a reply that repeats what has just been said
v.1to say again or imitate
同义词：repeat
2ring or echo with sound
同义词：resound / ring / reverberate
3call to mind
同义词：recall
双语例句
原声例句
权威例句
1the hills sent back a faint echo.
座座山丘传来微弱的回声。
2there was an echo on the line and i couldnt hear clearly.
电话里有回音，我听不清楚。
3his 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。
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词典短语
同近义词
同根词
词源
1radar echo雷达回波
2echo cancellation回波消除
3ultrasonic echo超声回波；超声回声
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百科
echothe exoplanet characterisation observatory (echo) was a proposed space telescope as part of the cosmic vision roadmap of the european space agency, and competed with four other missions for the m3 slot in the programme. on february 19, 2014, the plato mission was selected in favour of the other candidates

in the programme, including echo.echo would be the first dedicated mission to investigate exoplanetary atmospheres, addressing the suitability of those planets for life and placing our solar system in context. echo is intended to provide high resolution, multi-wavelength spectroscopic observations. it would measure the atmospheric composition, temperature and albedo of a representative sample of known exoplanets, constrain models of their internal structure and improve our understanding of how planets form and evolve. it will orbit around the l2 lagrange point, 1.5 million km from earth in the anti-sunward direction.
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