purr
verb [ I ] uk/pɜː/ us/pɝː/
发出平稳低沉的声音
to make a quiet, continuous, soft sound
The cat purred as I stroked its fur. 我抚摸猫的软毛时，它呜呜地叫着。
We could hear the sound of a lawnmower purring in the back garden. 我们能听到后院割草机的震颤声。
A black limousine purred up (= drove up making a quiet, continuous, soft sound) outside the hotel. 旅馆外面，一辆黑色豪华轿车呜地驶过来。
[ + speech ] "I love it when you stroke my back," she purred (= said with pleasure). “我喜欢你抚摸我的背，”她满意地哼着说。
purr
noun [ S ] uk/pɜː/ us/pɝː/
咕噜声，呜呜声
a purring noise
I stroked the cat and it gave a low purr. 我轻抚那只猫，它发出了低沉的呜呜声。
I heard the gentle purr of an engine outside the house. 我听到了房子外面发动机低沉的隆隆声。