纪录片《猫的秘密》 第39期 咕噜声的吸引力

It's constantly chopping and changing

那些咕噜声的长度

the length of those purr bouts¹.

在不断变化

And the purr is much faster in certain parts, isn't it?

这些叫声在某部分特别快 是吗

Back at the lab,

在实验室

Sarah's colleague examines the frequencies of the purrs.

莎拉的同事在测试呜呜声的频率

At the top, we've got the solicitation² purr

在顶端的是乞求式咕噜

and down below, we've got the non-solicitation purr.

在底部的是非乞求式咕噜

Both of these are low-frequency purrs,

他们都是低频咕噜声

but what particularly stands out quite clearly

但让人非常注意的

is that complete stand-out peak

是乞求式咕噜

you can see with a solicitation purr.

一个完整的峰值

It's very isolated³ from the other frequencies around it,

与它附近的其他频率完全独立开来

which suggests it would really stand out quite clearly.

这说明它非常能吸引注意力

You don't see that at all in the non-solicitation purr.

这在非乞求式咕噜声中没有出现过

And there's a surprising reason why we react so strongly

我们对这种频率的反应很大

to this frequency in the purrs.

其原因十分令人惊

Because embedded⁴ within it is the same frequency

因为它与婴儿啼哭的频率

as a baby's cry.

完全相同

1 bouts   

n.拳击（或摔跤）比赛( bout的名词复数 )；一段（工作）；（尤指坏事的）一通；（疾病的）发作

参考例句：

• For much of his life he suffered from recurrent bouts of depression. 他的大半辈子反复发作抑郁症。 来自《简明英汉词典》
• It was one of fistiana's most famous championship bouts. 这是拳击界最有名的冠军赛之一。 来自《现代英汉综合大词典》

2 solicitation   

n.诱惑；揽货；恳切地要求；游说

参考例句：

• Make the first solicitation of the three scheduled this quarter. 进行三位名单上预期捐助人作本季第一次邀请捐献。 来自互联网
• Section IV is about the proxy solicitation system and corporate governance. 随后对委托书的格式、内容、期限以及能否实行有偿征集、征集费用由谁承担以及违反该制度的法律责任进行论述，并提出自己的一些见解。 来自互联网

3 isolated   

adj.与世隔绝的

参考例句：

• His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
• Patients with the disease should be isolated. 这种病的患者应予以隔离。

4 embedded   

a.扎牢的

参考例句：

• an operation to remove glass that was embedded in his leg 取出扎入他腿部玻璃的手术
• He has embedded his name in the minds of millions of people. 他的名字铭刻在数百万人民心中。