英语词汇“be hard at it”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	be hard at it
释义	be hard at it 专心致志于…,刻苦钻研
随便看	private monopoly private morality private mortgage insurance private motor vehicle private municipal law private nature privateness privatenesses private network private network reached Private Network-to-Network Interface Private Network to Network Interface private network to network interface,PNNI private neutrality private nonfinancial institution private notice question private nuisance private nuisances private numbering plan private nurse private offering private office layout private order private organization private organizations 刀把子在手里刀把子攥在人家手里刀把子攥在手里刀搁在脖子上刀斧不开刃，费煞能人劲刀斧虽利，不加无罪之人刀枪入库，马放南山刀枪无眼刀添三个口，人减七分威刀疮药虽好，不割为妙。おお入り袋おお内がりおお内刈りおお写しおお切りおお助かりおお化けおお向こうおお商いおお喜び