The impact of the research and policy analysis can be particularly difficult to assess as UNCTAD's work contributes to a broader stream of national and international policy analysis and many factors influence the uptake of ideas.
62. 研究和政策分析的影响可能特别难以评估，因为贸发会议的工作有助于拓宽国家和国际政策分析，许多因素影响到意见的采纳。