文章来源:未知 文章作者:enread 发布时间:2020-09-01 08:06 字体: [ ]  进入论坛
We've all heard cats meow and hiss1, but why do they purr? There are a number of theories out there - from the commonly held belief that they are simply happy, to British comedian2 Eddie Izzard's light-hearted suggestion that they are impersonating a drill.
While they do purr when tickled3 or caressed4 to show their appreciation5 for attention, cats also make the noise when not in our company. The purring noise is a consistent pulsing sound that occurs while they both inhale6 and exhale7 breath. The word 'purr' is a great example of onomatopoeia and refers to the constant noise which ranges in frequency between 25 and 150 hertz.
For a long time, scientists debated how cats purred. Most people believe that the cat's brain signals the laryngeal muscles to vibrate and function like a valve, opening and closing the space between the vocal8 cords. What triggers this reaction is debated. Some argue that the cat intends to purr, while others say it may be due to endorphins released by the brain as a reaction to pleasure, or pain.
According to Leslie A. Lyons, an assistant professor at the School of Veterinary Medicine at the University of California, cats often purr while stressed, such as when they head to the vets9 or are recovering from an injury. So what are the potential benefits of this 'drilling' sound? Some scientists believe the vibrations10 that ripple11 through the cats' bodies may actually promote muscle development, heal bones and injuries, ease breathing and lessen12 pain. It could even help to soothe13 discomfort14 in a similar way to a child sucking their thumb.
So, the purring of a cat may have more uses than just telling you they're enjoying attention. It's also important to remember that not all cats can purr. Some bigger felines15, like lions, can't, and only roar. So, the next time you hear a roar, it probably isn't your pussy16 cat, and you might need to run.


1 hiss 2yJy9     
  • We can hear the hiss of air escaping from a tire.我们能听到一只轮胎的嘶嘶漏气声。
  • Don't hiss at the speaker.不要嘘演讲人。
2 comedian jWfyW     
  • The comedian tickled the crowd with his jokes.喜剧演员的笑话把人们逗乐了。
  • The comedian enjoyed great popularity during the 30's.那位喜剧演员在三十年代非常走红。
3 tickled 2db1470d48948f1aa50b3cf234843b26     
(使)发痒( tickle的过去式和过去分词 ); (使)愉快,逗乐
  • We were tickled pink to see our friends on television. 在电视中看到我们的一些朋友,我们高兴极了。
  • I tickled the baby's feet and made her laugh. 我胳肢孩子的脚,使她发笑。
4 caressed de08c4fb4b79b775b2f897e6e8db9aad     
爱抚或抚摸…( caress的过去式和过去分词 )
  • His fingers caressed the back of her neck. 他的手指抚摩着她的后颈。
  • He caressed his wife lovingly. 他怜爱万分地抚摸着妻子。
5 appreciation Pv9zs     
  • I would like to express my appreciation and thanks to you all.我想对你们所有人表达我的感激和谢意。
  • I'll be sending them a donation in appreciation of their help.我将送给他们一笔捐款以感谢他们的帮助。
6 inhale ZbJzA     
  • Don't inhale dust into your lung.别把灰尘吸进肺里。
  • They are pleased to not inhale second hand smoke.他们很高兴他们再也不会吸到二手烟了。
7 exhale Zhkzo     
  • Sweet odours exhale from flowers.花儿散发出花香。
  • Wade exhaled a cloud of smoke and coughed.韦德吐出一口烟,然后咳嗽起来。
8 vocal vhOwA     
  • The tongue is a vocal organ.舌头是一个发音器官。
  • Public opinion at last became vocal.终于舆论哗然。
9 vets 3e28450179d627638b3132ebb3ba0906     
abbr.veterans (复数)老手,退伍军人;veterinaries (复数)兽医n.兽医( vet的名词复数 );老兵;退伍军人;兽医诊所v.审查(某人过去的记录、资格等)( vet的第三人称单数 );调查;检查;诊疗
  • I helped train many young vets and veterinary nurses too. 我还帮助培训了许多年青的兽医和护士。 来自互联网
  • In fact, we've expanded mental health counseling and services for our vets. 实际上,我们已经扩大了退伍军人的心理健康咨询和服务。 来自互联网
10 vibrations d94a4ca3e6fa6302ae79121ffdf03b40     
n.摆动( vibration的名词复数 );震动;感受;(偏离平衡位置的)一次性往复振动
  • We could feel the vibrations from the trucks passing outside. 我们可以感到外面卡车经过时的颤动。
  • I am drawn to that girl; I get good vibrations from her. 我被那女孩吸引住了,她使我产生良好的感觉。 来自《简明英汉词典》
11 ripple isLyh     
n.涟波,涟漪,波纹,粗钢梳;vt.使...起涟漪,使起波纹; vi.呈波浪状,起伏前进
  • The pebble made a ripple on the surface of the lake.石子在湖面上激起一个涟漪。
  • The small ripple split upon the beach.小小的涟漪卷来,碎在沙滩上。
12 lessen 01gx4     
  • Regular exercise can help to lessen the pain.经常运动有助于减轻痛感。
  • They've made great effort to lessen the noise of planes.他们尽力减小飞机的噪音。
13 soothe qwKwF     
  • I've managed to soothe him down a bit.我想方设法使他平静了一点。
  • This medicine should soothe your sore throat.这种药会减轻你的喉痛。
14 discomfort cuvxN     
  • One has to bear a little discomfort while travelling.旅行中总要忍受一点不便。
  • She turned red with discomfort when the teacher spoke.老师讲话时她不好意思地红着脸。
15 felines 43944fefdb0bc6cdc2c8bb6cd0059e05     
n.猫科动物( feline的名词复数 )
  • Any of several felines, such as the cheetah or the snow leopard. 这片地区是濒临灭绝的雪豹的栖息地。 来自互联网
  • Search in the basket of life, you will find it, answered Felines. 它在生命的篮子里"巴思特女神回答道。 来自互联网
16 pussy x0dzA     
  • Why can't they leave my pussy alone?为什么他们就不能离我小猫咪远一点?
  • The baby was playing with his pussy.孩子正和他的猫嬉戏。
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