n. 回声, 回音, 回波
vi. 发回声, 随声附和
vt. 摹仿, 重复, 反射
[计] 回显; DOS批处理命令:控制MS-DOS命令是否在屏幕上显示
英文释义
n. the repetition of a sound resulting from reflection of the sound waves
n. (Greek mythology) a nymph who was spurned by Narcissus and pined away until only her voice remained
n. a reply that repeats what has just been said
n. a reflected television or radio or radar beam