词汇	nook ring
释义	nook ring 凹角环
随便看	established royalty established rule established rule of conduct established rules established rules and regulations establishedrules of conduct established rules of conduct established sector established securities market established shot Established Six Sigma Institue Inc established sound source established species established state established status established store established strategic co-operative partnership established street trader established suit established suits established survey organizations established target level established technology established tradition established tree