But whatever their usefulness for other problems, cross-sectional data are often highly misleading guides to trends on such critical economic issues of the new millennium as the prevalence rates of chronic disabilities, expenditures on health care, and pension costs. 我自己是翻成 不论他们在其他问题上有多有用 横截面资料常会误导学者 对千禧年的重要经济议题如慢性疾病 健保支出 和退休金 做趋势分析 好像怪怪的..因为横断面怎麽做趋势分析... 而且SUCH AS 的部分也不知怎麽翻 请教大家 谢谢 -- 心空了，全宇宙都空了 (赵雅芝)~~ --

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