n (1) 回声(音) (second sound heard after the first sound has bounced off a surface such as a rock face) [C]：We shouted at each other inside the tunnel so that we could hear our～es. 我们在隧道里互相喊叫以便能够听到我们的回声。The canyon produces loud～es. 这个峡谷发出巨大的回声。

(2) 反响; 附和(者) (person or thing that imitates sth，as of the opinions，speech，or dress of another) [C]：She is an～of her master/of her husband's opinion. 她是她主人/她丈夫观点的附和者。an～of an early style 对从前样式的模仿; find an～in one's heart 与某人取得共鸣;

(3) (无线电)回波 (any reflected wave，as in radio or，esp in radar) [C]： radar～雷达回波;

vt (1) 发出回声(音) (send back an echo of) [T+n，T+n+adv(back)]：The valley～ed his song/his shout. 他的歌声/喊叫在山谷中激起回响。The sound of thunder was～ing back from the mountains. 雷声从山中反射回来。

(2) 重复，模仿 (repeat or imitate) [T+n]：～what sb is thinking/what sb says/the thoughts of a leader/sb's feeling/sb's opinion 重复(模仿)某人的想法/某人所说的话/领导人的思想/某人的感情/某人的观点; The fashion～es the taste/the style of the 1930's. 这种款式模仿20世纪30年代的情趣/风格。〖同〗 repeat，imitate，copy