回声 (huí shēng) — echo

定義

例文

• 山谷里传来了回声。
  Shān gǔ lǐ chuán lái le huí shēng.
  An echo came from the valley.
• 他对着山洞大喊，听到了自己的回声。
  Tā duì zhe shān dòng dà hǎn, tīng dào le zì jǐ de huí shēng.
  He shouted into the cave and heard his own echo.
• 这个房间的回声效果非常好。
  Zhè ge fáng jiān de huí shēng xiào guǒ fēi cháng hǎo.
  The echo effect in this room is very good.