The ragged, strained breathing becomes as smooth as a kitten's purr.

不规则、紧张吸变得平滑，像小猫噜声那安稳。

Scientists have discovered that it has an embedded frequency that sounds like a human cry.

科学家发现这种噜声频率听起来有点像人类哭声。

This sounds more urgent to the owner and they often asking for food or attention.

这种噜声听起来较紧迫，通常要求主人注意或讨食。

I just had to grunt a lot for that one.

这个角色我真得发噜声。

Interestingly, we still don't really know why cats purr.

有趣，我们仍然不知道猫为什么会发噜声。

But the dogs only wagged their tails and the cats only purred.

可，那些狗只会摇尾巴，猫也只会发噜声。

In the commercial, the old man's angry red sound waves turn a gentle blue.

广告里，连老头如雷噜声也能化为轻柔之音。

He occasionally leaped off the rug and came down making dog grunts in his throat.

偶尔会从地毯跳起再落下，喉咙做狗噜声。

Have you noticed it's always an Aflat? Is it?

你有没有注意到他噜声总降A调? 吗?

Many professionals say that a cat's purrs serves the same function as a person's smile.

很专业人士说，猫噜声与人微笑具有相同功能。

In fact, cats purr both during pleasurable situations but also while they're in duress or injured.

事实上，猫在愉悦情况下还有受到胁迫或受伤时都会发噜声。

The mother will also purr back say that all is well her end too.

母猫也会发噜声告诉幼猫一切都很好。

I'm going to miss his stripey face in the morning. And his purr, yeah, I'm going to miss that.

早上我会想念它那布满条纹脸。当然我也会想念它噜声。

He started making noises such as Frank had never heard before; he was hissing and spitting without drawing breath.

他发一些弗兰克从未听见过声音；他不歇气地发嘶嘶声和噜噜声。

And they rolled over on their backs, and they started purring so loudly that it was like tractor engines.

它们滚啊滚，接着开始发噜声，那声音大到像拖拉机引擎声。

And so you can think of all these different pops and chirps and grunts and snaps that happen there.

珊瑚礁里有各种你能想到砰砰声、啁啾声、噜声和啪嗒声。

You know, one night, Leonard's nose whistled so loud, I swear it was like sleeping on a train track.

有天晚上，Leonard噜声超大我就像睡在了铁轨上。

But there are other types of purr, there is another type of purr called the solicitation purr.

但还有其他种噜声，其中一种叫做请求噜声。

It was just more practical this way, easier to travel and safer when you know everyone around you by grunt.

这种方式会更实用，更便于旅行，当你凭噜声就能认身边谁时候，也能更保证安全。

Cats will generally purr when they're stretched out in the sun or lying on your lap.

猫通常在阳光下伸展时，还有趴在你大腿上时会发噜声。