用听诊器听猫发出的呼噜声是很好的放松技巧。
Listening to a purring cat through a stethoscope is a great relaxation technique.
研究发现有21%和7%的猫狗打呼噜！
The study found that 21 percent of the dogs and 7 percent of the cats snored!
首先他们录下了十只猫的呼噜声，其中有的是在猫要食物的时候记录的，其他的是在别的状态下记录的。
First they recorded the purrs of 10 cats; some were recorded when a cat was actively soliciting food and others in a non-solicitation setting.
猫睁开眼睛，呼噜呼噜地叫着，抬眼看了看男人。
然而，在猫科动物中，其他种类也会发出呼噜声，如短尾猫、猎豹、欧亚猞猁、美洲狮和野猫。
However, other species in the Felidae family also purr: bobcat, cheetah, Eurasian lynx, puma, and wild cat.
猫睁开眼睛，呼噜呼噜地叫着，抬眼看了看男人。
“要是它们只在‘是’的时候发出呼噜声，而在‘否’时候发出喵叫声，或有任何类似的规则，”她曾经说道，“那人与猫至少可以继续交谈！”
"If they would only purr for 'yes', and mew for' no ', or any rule of that sort," she had said, "so that one could keep up a conversation!"
是什么让其他猫呼噜声发声独特的是，它是在整个呼吸周期(吸气和呼气)制作。
What makes the purr distinctive from other cat vocalizations is that it is produced during the entire respiratory cycle (inhaling and exhaling).
猫睁开开眼睛，呼噜呼噜地叫着，抬眼看了看男人。
那只猫大声地发出呼噜呼噜声。
那只猫大声地发出呼噜呼噜声。
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