purr

n.

咕噜咕噜的响声；（猫发出的）咕噜声；（机器等）颤动声；咕噜咕噜地叫

vi.

猫发咕噜声；发出喉音；

vt.

发出喉音；满意地说；

过去式：purred过去分词：purred现在分词：purring第三人称单数：purrs

1. The cat was purring contentedly on my lap.
   这只猫趴在我的膝盖上，满足地呜呜叫着。
2. The big car purred along the road.
   那辆大汽车一路呜呜地开了过去。
3. She purred her approval of the suggestion.
   她高兴地表示赞同这个建议。

1. I stroked the cat and it gave a low purr.
   我抚摸着这只猫，它满足地低声呜呜叫着。
2. I heard the gentle purr of an engine outside the house.
   我听到房子外面有引擎微微的颤动声。

The PurR regulon in Escherichia coli K-12 MG1655
Low-power multimedia engine makes portables purr.(Digital)
Crystal structure of LacI member, PurR, bound to DNA: minor groove binding by alpha helices.
Crystal Structure of Lacl Member, PurR, Bound to DNA: Minor Groove Binding by $\alpha$ Helices
Roles of the GcvA and PurR proteins in negative regulation of the Escherichia coli glycine cleavage enzyme system.
Escherichia coli purB gene: cloning, nucleotide sequence, and regulation by purR.
Autoregulation of PurR repressor synthesis and involvement of purR in the regulation of purB, purC, purL, purMN and guaBA expression...
Escherichia coli gene purR encoding a repressor protein for purine nucleotide synthesis. Cloning, nucleotide sequence, and interacti...
Ion concentration and temperature dependence of DNA binding: comparison of PurR and LacI repressor proteins
Definition of the Bacillus subtilisPurR Operator Using Genetic and Bioinformatic Tools and Expansion of the PurR Regulon with glyA, ...