短語詞組短語A Hard Day at Work 分鐘英語課堂辛苦的工作日hard at work on 致力于POLICE HARD AT WORK 勤務(wù)太累了A dentist hard at work 用人造烤瓷牙替換掉已經(jīng)不再健康的天然牙琺瑯;牙醫(yī)在辛勤工作hard at work working hard 在努力工作He was hard at work 他正努力工作Work Hard At Lessons 努力學(xué)功課work hard at math 在數(shù)學(xué)上努力work hard at sth 努力學(xué)習(xí);在某一方面努力工作;努力做某事 返回 hard at work