词汇	dig away at
释义	dig away at vt.刻苦钻研
随便看	rational transformation rational transformation group rational transfusion rational transport rational travel rational treatment Rational Treatment of Rheumatoid Arthritis rational trend rational triple polynomial rational type rational understanding Rational understand respiratory viral infection rational unified process rational uniformity rational unit rational united process rational units rational untilization of warehouse rational urban form rational usage rational usage of antimicrobial agents rational usage of drug Rational usage of drugs rational use rational use drug