He fell upon the new idea and after a long time of hard work wrote an important paper on it.

 
  • 他下苦功思考這一新觀(guān)點(diǎn),經(jīng)過(guò)長(cháng)時(shí)間的艱苦工作,寫(xiě)了一篇論文,對此進(jìn)行闡述。
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