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+ I$ d# d7 b" P5 U4. "No field of study can advance significantly unless outsiders bring their knowledge and experience to that field of study."
% t% o8 D' R/ w( [- {: n( G在任何一个研究领域当中，除非有该领域之外的人引进他们的知识和经验，否则该领域就很难获得巨大的发展。 4 b2 a1 o% h* U
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& H; T: }2 z/ A; E+ {% G参与方式9 @- w( e  I5 u; m. s0 a( S
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