diligent; industrious; 勤奋
be excited; 兴奋
wield one's writing brush energetically; 奋笔疾书
roll up sleeves (call for revolt, etc.) 奋袂
attack with vigour [force] 奋击
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)