v.（海狸似地）拼命工作( beaver的过去式和过去分词 )；忙于（某事），勤奋工作； 英英释义： beaver[ 'bi:və ]n.the soft brown fur of the beaver同义词：beaver fura native or resident of Oregon同义词：Oregoniana full bearda man's hat with a tall crown; usually covered with silk or with beaver fur同义词：dress