beaver
Word family nounbeaverybeaverboardbeaveradjectivebeavered
bea·ver1 /ˈbiːvə $ -ər/ noun [countableC] → eager beaver at eager(2) beaver2 verb 1 beaver away phrasal verbphr v informal WORK HARDto work very hard, especially at writing or calculating something 卖力地干,努力工作〔尤指写作或计算〕 at He’s been beavering away at his homework for hours. 他埋头做作业已经有几个小时了。
Origin beaver Old English beofor