ech·o¹/`ɛko; ˈekəʊ/ n [C] plural 复数 echoes 1 a sound that you hear again because it was made, for example, in a large empty room or a valley 回音，回声 2 something that is very similar to what has happened or been said before 十分相似的东西，如出一辙的事物: a murder which has echoes of Kennedy's assassination 与甘乃迪被刺相类似的一宗谋杀