n.

1. 回聲；回響[C][U]
   This wall is famous for producing echoes.

   這牆壁因能發出回聲而出名。

2. （輿論等的）反應；共鳴[U][C]
   His words aroused no echo in their hearts.

   他的話未能在他們心中引起共鳴。

3. 重複；仿效[U][C]
4. 附和者；應聲蟲[C]
   The young man is only an echo of his mother's opinions.

   那個年輕人只不過是他母親意見的附和者。

vi.

1. 發出回聲，產生回響[（+with/to）]
   The hall echoed with the audience's laughter.

   大廳裡回響著觀眾們的笑聲。

   His shout echoed across the valley.

   他的喊聲在山谷迴盪。

2. 重複他人的話（或行動等）

vt.

1. 反射（聲音等）
2. 重複（他人的話等）
   He is always echoing what his boss says.

   他老是重複他老板的話。

n.

1. a sound caused by the reflection of sound waves from a surface back to the listener.
   ▸a reflected radio or radar beam.
   ▸Linguistics  the repetition of one speaker's utterance by another.
2. something suggestive of or parallel to something else.
3. Bridge  a play by a defender of a higher card in a suit followed by a lower one in a subsequent trick, used as a signal to request a further lead of that suit by their partner.
4. a code word representing the letter E, used in radio communication.

v.

1. (of a sound) reverberate or be repeated after the original sound has stopped.
   ▸repeat (someone's words or opinions).
2. be suggestive of or parallel to:
   a blue suit that echoed the colour of her eyes.

[名]

1. ①回聲；回音。
2. ②雷達上，目標反射回來的信號。