n. 回声,共鸣( echo的名词复数 );(言语、作风、思想等的)重复;重复者;[无线电]回波
v. 重复,随声附和( echo的第三人称单数 );类似;发射(声音等);发出回声
He listened and heard nothing but the echoes of his own voice in the cave.
他听了听,除了自己声音在山洞里的回响什么都没听见。
The echoes must have disguised the voice.
回声一定掩盖了声音。
They analyze the echoes, how the waves bounce back.
他们分析回声,以及波是如何反弹回来的。
She called to Peter and John and Michael, and got only mocking echoes in reply.
她呼唤彼得、约翰和迈克尔,得到的只是嘲笑的回音。
So the bat sends out these pulses, very focused bursts of sound, and echoes bounce back.
所以蝙蝠发出这些脉冲,一种非常集中的声波,然后回声就会反弹回来。