n. 回声，回音，回波，共鸣；（言语、作风、思想等的）重复；重复者

vi. 发出回声，充满回声,随声附和，产生回响，被重复

vt. 摹仿，效仿，重复，反射模仿，随声附和；类似；发射（声音等）

[计] 禁止(或允许)在屏幕上显示批处理命令行

[无线电] 回波

Echo
n. [希腊神] 山林女神（失恋于那喀索斯,其哀声留于山间成为回声）

──刘月

the repetition of a sound resulting from reflection of the sound waves, to reply in a sympathetic or identical tone as to sentiments expressed; a close parallel of words, styles and thoughts, etc; repeater

to ring or echo with sound, to repeat

to repeat in imitation, agreement, or flattery; to send (voices, etc.)

(of a computer) to display (a character) on the screen of a visual display unit as a response to receiving that character from a keyboard entry

The signal reflected by a radar target

Echo
(Greek mythology) a nymph who was spurned by Narcissus and pined away until only her voice remained.

──Liu Yue