1. 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。
《柯林斯英汉双解大词典》
2. The echoes must have disguised the voice.
回声一定掩盖了声音。
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3. 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。
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4. 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。
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5. 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。
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6. Echolocation is pretty self-explanatory; using echoes reflected by sound waves to locate things.
回声定位是比较不解自明的；利用声波反射的回声来定位物体。
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7. He tried it; but in the darkness the distant echoes sounded so hideously that he tried it no more.
他试过，但是在黑暗中，远处的回声听起来是那么可怕，所以他不再去试它了。
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8. So, the echoes from a tree are going to a mass of chaotic acoustic reflections, not like the echo from a moth.
所以，树的回声会是一团混乱的声波反射，而不像飞蛾的回声那样。
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9. Their bundle of characteristics echoes the ceaseless curiosity and willingness to take risks noted by other experts.
他们的一系列特征与其他专家指出的无休止的好奇心和冒险意愿相呼应。
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10. This picture echoes an old Chinese poem: Sharp edge of a sword comes out from grinding, and plum blossom's fragrance comes from the bitter cold.
这张照片和一首中国古诗产生了共鸣：宝剑锋从磨砺出，梅花香自苦寒来。
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11. Nearing the central part, her echoes were intruded on by other sounds; and seeing the barn, she guessed these to be the utterances of the preacher.
在靠近中心的地方，她的回声受到了其他声音的干扰；看到谷仓，她猜想这是牧师的声音。
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12. In this process of transmission and reflection, the sounds are changed, and the changes in the echoes enable the bat to perceive features of the target.
在这个传递和反射的过程中，声音发生了变化，回声的变化使蝙蝠能够感知到目标的特征。
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13. Anyway, as I were saying, by analyzing these echoes, the bat can determine, say, if there is wall in a cave that it needs to avoid, and how far away it is.
14. Blind people, without even being aware of the fact, are actually using echoes of their own footsteps and of other sounds, to sense the presence of obstacles.
甚至还没有意识到这个事实的盲人，实际上是在利用他们自己的脚步声和其他声音的回声来感知障碍物的存在。
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15. In fact, we kind of assumed that they were filtering a lot out, the way a sophisticated radar system can ignore echoes from stationary objects on the ground.
16. When a religious leader started chanting with echoes bouncing off the stonewalls over and over again, it must've seemed like a whole chorus of other voices, spirits of Gods maybe, joining in.
