求翻译：延安时期，中央积极开展调查研究活动，自上而下大兴调查研究之风，有力地推动了马克思主义中国化的实现。这一历史经验，对于今天推进中国特色社会主义建设事业，仍然有借鉴意义。是什么意思？

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The Yanan period, the CPC Central Committee, actively carry out investigations and studies in the Daxing studies in a top-down, and effectively promoted the realization of the sinicization of Marxism. This historical experience, for today the cause of building socialism with Chinese characteristics,

The Yenan time, the Central Committee of the CCP carries out investigation and study positively, from the top downward the energetically trend of investigation and research, powerfully impelled the Marxism Chinese realization.This historical experience, advances the Chinese characteristic socialist

Yanan, head of the active research activities, investigation of Tai Hing winds from top to bottom, effectively promoted the realization of Marxism in China. This historical experience today, for advancing the cause of building socialism with Chinese characteristics, still has significance.

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