The tiny kitten approached the enormous bear and let out a purr and a mew.
那猫却走近体大腰圆的灰熊，冲它喵呜，喵呜地叫着。
House cats employ a vocal repertoire that extends from a purr to a screech.
另外家猫还可以发出从呜呜声到尖叫声等不同的声音。
Other nocturnal solitary predators such as civets, mongooses and even hyenas are known to purr occasionally.
其它夜食动物如麝香猫，獴和土狼也偶尔发出这种声音。
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