（海狸似地）拼命工作( beaver的现在分词 )；忙于（某事），勤奋工作；
同义词：beaver fur
a native or resident of Oregon同义词：Oregonian
a full bearda man's hat with a tall crown; usually covered with silk or with beaver fur同义词：dress hathigh hatopera hatsilk hatstovepipetop hattopper
a movable piece of armor on a medieval helmet used to protect the lower facea hat made with the fur of a beaver (or similar material)同义词：castor
large semiaquatic rodent with webbed hind feet and a broad flat tail; construct complex dams and underwater lodgesv.work hard on something同义词：beaver away
eager beaver做事非常卖力气的人，做事勤奋的人（特别指做事过于卖力气以讨好上司的人）