collaborate

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• ① 合作;合著
  • He is collaborating on a paper with me.他正在跟我合写一篇论文。
  • I collaborated with him in writing a novel.我和他合作写一部小说。

• ② (与敌人)合作,通敌
  • They collaborated with the Nazis during the war.他们在战争期间与纳粹党徒合作。