让我们来谈谈声谱的另一端，人类听不到的声音——超声波。
Let's talk about the other end of the acoustical spectrum, sound that is too high for humans to hear—ultrasound.
这些回声人类是听不到的，但对蝙蝠来说，却是真正的“如雷贯耳”。
Much of that echolocation sound is beyond the range of the human ear. But to bats, it's as loud as a jet airplane.
Herzing博士认为很多信息可能都被编码成这类声音，包括海豚的一些人类听不到的超声波。
Herzing believes that much information may be encoded in these sounds, as well as in dolphins' ultra-high frequencies, which humans cannot hear.
一个小时之前，他睁开了他的眼睛，说了一句我以为再也听不到的话：“妈妈。”
An hour ago he opened his eyes and said a word I thought I'd never hear again, "Mommy."
处于危险情况下的小老鼠能发出人类听不到的超声波，母老鼠在远处也能听到这些声音，然后它就赶快跑回来保护自己的孩子。
Young mice in danger can make ultrasonic sounds that the human ear cannot detect. The mother mouse can hear these sounds from a distance. Then she hurries back to protect her babies.
这是一部令人回味，鼓舞人心，并深切感动的自传，描述着一个非凡的女人对这个她看不到，也听不到的世界的强烈印象。
The World I Live in is an evocative, inspirational, and deeply moving account of an extraordinary woman's keenest impressions.
周三仅有五人被救出，并且救援者说从早上起已经听不到求救的声音。
Only five had been rescued by Wednesday, and rescuers say they have heard no cries since the morning.
梅森和其他探员在观察室里看着他俩，杰克向彭蒂科夫嘀咕了几句，梅森听不到他说的是什么。
As Mason and the other agents watch from the observation room, Jack mumbles something to Penticoff that can't be heard by Mason.
他把头埋进枕头，这样他就可以听不到父母吵架的声音了。
He covers his head with his pillow so he doesn't have to listen to the sound of his parents arguing.
他的嘴巴在动，但是她却听不到他说的话。
“是啊，”他轻声说道，声音轻得我几乎听不到他的回答。
"Yes," he muttered, his voice so muted I hardly heard his reply.
里面没人，听不到一点声音，甚至远处的发动机声、一阵大风声、一声鸟鸣声都听不见。
There's nobody about, not a sound to be heard, not even a distant engine, a gust of wind, a bird.
然后狐狸说：“我能看到你那美丽的脸，可是我听不到你那好听的声音。
Then the fox said, "I can see your beautiful face, but I can't hear your beautiful voice."
或者说人们听到的总是拒绝或误解。他们听不到爱，就隐藏在那些话语的后面，有可能还是在愤怒的话语的后面。
Or people listen only for rejection or misunderstanding. They do not see the love that is there just beneath the surface, even if the words are angry.
有一段时间，我不相信那些我看不到，听不到，或者触摸不到的东西的存在。
I also had a hard time believing in the existence of anything I could not see, hear, or touch.
如果他整夜都待在落叶松的树林中，他就听不到田庄里的骚动。
If he had remained among the larches all night, he would have heard nothing of the stir at the Grange.
既然灵魂通常只能理解为非物质性的(这就是为什么灵魂不会受到死亡的影响)。灵魂看不见，听不到，碰不了，闻不着，等等。
Since the soul is usually understood to be immaterial (that is why it is unaffected by death), it cannot be seen, heard, touched, smelled, etc.
自从他们开工以后，他们的声响太吵了，搞得我们听不到自己唱歌的声音了。
Ever since they started working on it, it's been so noisy we can barely hear ourselves sing.
看这些不断重复的东西，你听不到什么特别有意思的笑话，也学不到什么新东西。
By watching these repeats you don't even get to hear a unique joke or learn something new.
所有的东东都非常干净，巨大地毯柔软异常，走路的时候你都听不到自己的脚步声。
Everything was very clean and you could never hear your own steps as you walked because the carpets were so big and they were as soft as fur.
意大利的威尼斯是一个神奇的天堂，它是世界上少数几个城市听不到汽车声音的城市之一。
Venice, Italy is a magical place. It is one of the few cities in the world where the sound of cars are never heard.
当一个小孩子关注于区分哪一只是㭴鸟，哪一只是麻雀的时候，他已经看不到那些鸟，听不到它们的歌唱了。
The moment a little boy is concerned with which is a jay and which is a sparrow, he can no longer see the birds or hear them sing.
如果他整夜都待在落叶松的树林中，他就听不到田庄里的骚动；除非，也许他会听到送信人到吉默吞去的马蹄疾驰声。
If he had remained among the larches all night, he would have heard nothing of the stir at the Grange; unless, perhaps, he might catch the gallop of the messenger going to Gimmerton.
我想听听，看看我是否能听到任何类型的引擎噪音。我什么也听不到。
I wanted to listen, see if I could hear any type of engine noise. I could not hear anything.
你看不见它，闻不到它，也听不到它，并且人们对于如何准确地定义它，或者查明它的来源也存在分歧。
You can't see it, smell it, or hear it, and people disagree on how precisely to define it, or where exactly it comes from.
除了黑鸟和麻雀，见不到其它的身影；除了蝴蝶扇动翅膀，听不到其它的声音。
There is nothing to see except blackbirds and sparrows; nothing to hear except the noise of butterflies\' wings.
除了黑鸟和麻雀，见不到其它的身影；除了蝴蝶扇动翅膀，听不到其它的声音。
There is nothing to see except blackbirds and sparrows; nothing to hear except the noise of butterflies\' wings.
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