文章來源:未知 文章作者:enread 發布時間:2020-09-01 08:06 字體: [ ]  進入論壇
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.我們能聽到一只輪胎的嘶嘶漏氣聲。
  • Don't hiss at the speaker.不要噓演講人。
2 comedian jWfyW     
  • The comedian tickled the crowd with his jokes.喜劇演員的笑話把人們逗樂了。
  • The comedian enjoyed great popularity during the 30's.那位喜劇演員在三十年代非常走紅。
3 tickled 2db1470d48948f1aa50b3cf234843b26     
(使)發癢( tickle的過去式和過去分詞 ); (使)愉快,逗樂
  • We were tickled pink to see our friends on television. 在電視中看到我們的一些朋友,我們高興極了。
  • I tickled the baby's feet and made her laugh. 我胳肢孩子的腳,使她發笑。
4 caressed de08c4fb4b79b775b2f897e6e8db9aad     
愛撫或撫摸…( caress的過去式和過去分詞 )
  • His fingers caressed the back of her neck. 他的手指撫摩著她的后頸。
  • He caressed his wife lovingly. 他憐愛萬分地撫摸著妻子。
5 appreciation Pv9zs     
  • I would like to express my appreciation and thanks to you all.我想對你們所有人表達我的感激和謝意。
  • I'll be sending them a donation in appreciation of their help.我將送給他們一筆捐款以感謝他們的幫助。
6 inhale ZbJzA     
  • Don't inhale dust into your lung.別把灰塵吸進肺里。
  • They are pleased to not inhale second hand smoke.他們很高興他們再也不會吸到二手煙了。
7 exhale Zhkzo     
  • Sweet odours exhale from flowers.花兒散發出花香。
  • Wade exhaled a cloud of smoke and coughed.韋德吐出一口煙,然后咳嗽起來。
8 vocal vhOwA     
  • The tongue is a vocal organ.舌頭是一個發音器官。
  • Public opinion at last became vocal.終于輿論嘩然。
9 vets 3e28450179d627638b3132ebb3ba0906     
abbr.veterans (復數)老手,退伍軍人;veterinaries (復數)獸醫n.獸醫( vet的名詞復數 );老兵;退伍軍人;獸醫診所v.審查(某人過去的記錄、資格等)( vet的第三人稱單數 );調查;檢查;診療
  • I helped train many young vets and veterinary nurses too. 我還幫助培訓了許多年青的獸醫和護士。 來自互聯網
  • In fact, we've expanded mental health counseling and services for our vets. 實際上,我們已經擴大了退伍軍人的心理健康咨詢和服務。 來自互聯網
10 vibrations d94a4ca3e6fa6302ae79121ffdf03b40     
n.擺動( vibration的名詞復數 );震動;感受;(偏離平衡位置的)一次性往復振動
  • We could feel the vibrations from the trucks passing outside. 我們可以感到外面卡車經過時的顫動。
  • I am drawn to that girl; I get good vibrations from her. 我被那女孩吸引住了,她使我產生良好的感覺。 來自《簡明英漢詞典》
11 ripple isLyh     
n.漣波,漣漪,波紋,粗鋼梳;vt.使...起漣漪,使起波紋; vi.呈波浪狀,起伏前進
  • The pebble made a ripple on the surface of the lake.石子在湖面上激起一個漣漪。
  • The small ripple split upon the beach.小小的漣漪卷來,碎在沙灘上。
12 lessen 01gx4     
  • Regular exercise can help to lessen the pain.經常運動有助于減輕痛感。
  • They've made great effort to lessen the noise of planes.他們盡力減小飛機的噪音。
13 soothe qwKwF     
  • I've managed to soothe him down a bit.我想方設法使他平靜了一點。
  • This medicine should soothe your sore throat.這種藥會減輕你的喉痛。
14 discomfort cuvxN     
  • One has to bear a little discomfort while travelling.旅行中總要忍受一點不便。
  • She turned red with discomfort when the teacher spoke.老師講話時她不好意思地紅著臉。
15 felines 43944fefdb0bc6cdc2c8bb6cd0059e05     
n.貓科動物( feline的名詞復數 )
  • Any of several felines, such as the cheetah or the snow leopard. 這片地區是瀕臨滅絕的雪豹的棲息地。 來自互聯網
  • Search in the basket of life, you will find it, answered Felines. 它在生命的籃子里"巴思特女神回答道。 來自互聯網
16 pussy x0dzA     
  • Why can't they leave my pussy alone?為什么他們就不能離我小貓咪遠一點?
  • The baby was playing with his pussy.孩子正和他的貓嬉戲。
TAG標簽: noise cats purr
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