echomotism

例句：

1. 1. The soundof the waves echoing off the shorewas soothing.
   海浪拍打岸边的声音回荡着，令人感到宁静。
2. 2. The echoof her laughter could beheard for miles around.
   她笑声的回音在周围几英里内都能听到。
3. 3. The scientist used a device tocreate an echo that could be studied indetail.
   科学家使用一种装置产生了可以详细研究的回声。