英语词汇“be hard at it”的音标、翻译、中文意思、用法、释义-英汉双解词典

词汇	be hard at it
释义	be hard at it专心致志于…,刻苦钻研
随便看	balmy Azores Bahraini automatise bail bailable avoidable balderdash bad attitude BA back scratcher baloney BA backscratching balm balboa avoidant baldfaced back seat automatism b. back bench baa back and forth backseat