The kitten had settled comfortably in her arms and was purring enthusiastically.

小猫舒服地卧在她怀里，起劲地打着呼噜。

《柯林斯英汉双解大词典》

“Solicitation purring is probably more acceptable to humans than overt meowing, which is likely to get cats ejected from the bedroom, ” McComb said in a statement.

“对人类来说，恳求的呼噜声比明显的喵喵声更容易接受，后者很可能猫猫会被轰出卧室。” McComb声称。

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Scientist still do not know exactly how the purring sound is made , although some believe that it originates in the cardiovascular system rather than the throat.

科学家们还不能确切地弄清楚呼噜声是怎么产生的，尽管有一些认为他产生于心血管系统而不是咽喉。

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By using an electric drive of the sort that is purring away in Leicestershire, ships can fire up their engines one at a time and run each at its most economical throttle setting.

ECONOMIST: Electric ships