These Raptors could pick up low frequency sound.

些迅猛龙可以听到低频声音。

Low-frequency noise, in particular, just goes through the trees as though they aren't there.

特别是低频噪音无视树木的存在，直接穿过他们释放出来。

Noise-canceling headphones are best, removing persistent low-frequency hums.

降噪耳机最擅长去除持续的低频嗡嗡声。

We do retain most of all low frequency sounds.

我们确实能听到大部分低频声音。

Although we can't hear these low sounds, we can feel them.

虽然我们听些低频的声音，但我们能感觉到。

And we see this lower frequency formant here.

我们可以看到个低频共振峰。

Over a combined total of 26 hours, 32 calls were captured—including some low-pitched pulses.

总计超过26小时的记录时间内，一共收到32个声音文件—包括了一些低频声波号。

Even more effective, low-frequency sounds, with their long wavelengths, travel much further than high frequencies.

更有效的是，低频声音波长较长，比高频声音传播得更远。

So they broke out a set of very very low frequency speakers.

他们搞出了一套非常非常低频的扬声器。

And the areas with the longer fibers resonate with lower-frequency waves.

纤维较长的区域与低频波共振。

This could be triggered by low or high-frequency vibrations, a stretch, or simply light, static pressure.

可能会由低频或高频的感受、拉伸，或仅仅由轻微的静态压所引发。

These sizable sound-collectors help the jerboas sense low frequency noises, and keep cool by radiating heat.

些体型巨大的声音收集器帮助长耳跳鼠感知低频噪音，并通过散热保持凉爽。

At the other end, in the deep infrasound, elephants and whales, tigers and some birds make sound.

另一端的低频次声，大象、鲸鱼、老虎和一些鸟类会制造样的声音。

Here we are referring to high and low frequency words - so it means how often they occur.

里我们指的是高频词和低频词——所以它指的是它们多久出现一次。

So the way we're going to do this is we're going to listen to the low end first.

我们的做法是先来听一下低频。

Developed by professor David Premack, the Premack principle states, " More probable behaviors will reinforce less probable behaviors."

由大卫·普雷马克教授提出的普雷马克原理指出：“高频行为会强化低频行为。”

We register short waves at high frequencies as bluish colors, while long, low frequencies look reddish to us.

我们将高频的短波记录为蓝色，而长的低频在我们看来是红色的。

Now they knew lower frequency words but they hadn't mastered those most important words.

他们知道低频词，但是他们还没有掌握那些最重要的单词。

For Parasaurolophus, genetic modifications over time give them the tools both to pick up and emit these low-frequency sounds.

对副栉龙来说，长期的基因变化使它们拥有了学习和模仿些低频声音的工具。

Growling is quite a distinct sound, and other animals that are much larger use low-pitched sounds, when they're being threatening.

嚎叫是非常特殊的声音，其他大型动物在感受到威胁时，会使用低频的声音。