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。

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。

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。

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。

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。

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。

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。

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。

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.

总之，就像我刚才讲的，通过分析这些回声，蝙蝠可以确定，比如说，洞穴里是否有需要避开的墙壁，以及它的距离有多远。

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。

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.

事实上，我们推断蝙蝠在分析回声时过滤掉了很多因素，就像一个复杂的雷达系统可以忽略地面上静止物体的回声那样。

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.

当一位宗教领袖开始吟唱时，回声敲打着石墙上一遍又一遍地回响，这一定像是其他所有声音的合奏，也许是神的灵魂也加入了其中。

The accident has echoes of past disasters.

该事故让人想到过去的那些灾难。

Yesterday's crash has grim echoes of previous disasters.

昨天的撞车事故和以前的灾难令人痛心地相似。

The sound of the guqin mixed with the echoes from the mountains, until the musician felt he was at one with nature.

古琴的声音与山间的回声交织在一起，直到音乐家感到自己与自然融为一体。

Wadhams echoes the need for urgency.

沃德姆斯重申了采取紧急措施的重要性。

That old moan by W.C. Fields, the American funny man, echoes the more recent feelings of many a resident in Basra.

这是美国喜剧演员W.C. 费尔兹过去抱怨的话，现在却是大多数巴士拉居民最近的心声。

I don't think I need to draw any echoes, your reading assignment for the next class; it has a diagram that shows this very clearly.

我认为我不需要再讲一次你们下节课的阅读作业；有一个图表已经说明地非常清楚了。

"This fossil echoes the scroll on a fiddle's neck, but it also has symbolic significance: violin-making," he says, "it is a fossil profession."

“这块化石和小提琴琴颈的样子相仿，其象征意义不凡：制作小提琴，”他说，“这是古化石行业。”

The canyon is famous for producing echoes.

这个峡谷以回声而闻名。

His words aroused no echoes in their hearts.

他的话没有在他们心中引起反响。

A person's psychology is a subtle thing. How true it is that words are echoes of the heart.

人的心理真是奇妙，言为心声一点不假。

"I do" echoes from a distance.

远处传来“我愿意”的回响。

There are more subtle echoes.

还有其他更细微的东西。

Echoes of cries of pain reverberate my heart.

痛苦喊叫的回声在我心中回荡。