蝙蝠会发出我们听不到的非常高的超声波脉冲。
The bat emits these ultrasonic pulses, very high pitch sound waves that we cannot hear.
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.
人们开始意识到，当你什么都听不到的时候，生活会变得多么困难。
People became aware of how difficult life could be when you can't hear anything.
你可能听到别人听不到的声音。
像他们听不到的一样聋的是没有的。
这是听不到的。
这样可以使您在对方听不到的情况下在本地端进行私下讨论。
This allow you to have a private discussion on the local end without the other end hearing it.
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.
我们要先“看到眼睛看不到的，听到耳朵听不到的”，然后再做出判断。
We set aside our judgments in order to "see what eyes have not seen and ears cannot hear" I Cor.
声频设备设计的初衷，是使所有的失真都低到一个耳朵听不到的程度上。
The design goal for audio equipment is that all distortion be so low in level it can't be heard.
诱饵应该是—些零碎有用的信息，而这些信息是人们在平常的生活中是听不到的。
The hook should be a little nugget of information which is something out of the ordinary that people wouldn't ordinarily hear during a conversation.
旁白：在戏剧中低声说出或直接说给观众的台词。旁白在舞台上其他人物是听不到的。
Aside: in drama, lines spoken by a character in an undertone or directly to the audience. An aside is meant to be unheard by the other characters onstage.
它通过振动双颊来发出人类听不到的超声波。它通过不同节奏的超声波来与同伴们交流。
Otamaro 535: It vibrates its cheeks and emits sound waves that are inaudible to humans. It communicates with the sound waves' rhythm.
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.
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.
我听不到别人的音信，也看不到一缕阳光。
I do not hear a word from anybody and cannot see a ray of sunlight.
你听不到这么高频率的声波。
我隔墙听不到他们的交谈。
他们听不到她的消息时，唯恐发生了最坏的事。
“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.
“我只希望…”她的声音越来越小，最后听不到了。
他的声音几乎听不到。
如果你在公路上跑，带个耳机是非常危险的，因为你可能听不到一辆汽车已经跟在你的身后。
If you run on the road, headphones can be dangerous, as you might not hear traffic coming your way.
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