crown.乌鸦；啼叫；欢叫v.报晓；啼叫；欢叫；夸口；洋洋自得crowfoot holddown将盖子固定在搭板上的叉子crowing mechanism排挤机制crow-foot cracks爪纹龟裂crow-flight path直线程crowing convulsion喘鸣性喉痉挛crow your head offvi.吹嘘(自夸)crowbar protection过压保护装置crow over a victory因胜利而得意洋洋crow - step gable阶式山墙crow one's head off毫无效果