著名社会科学家李景汉搜集出版的《定县秧歌选》，收入了剧目近百个。
Collection of well-known social scientist Li Jinghan book "Ding County Yangge choose" the income of nearly a hundred operas.
本文借助于对“拉尼斯—费景汉模型”的扩展，分析了农业部门的技术进步偏向与劳动力调整这一关键性问题。
We expand the RanisFei model to analyze the critical issue between the agricultural technology tendency and the labor adjustment in the agricultural sector.
54岁的瑞典摄影家汉斯·斯特兰德在这只“渴望成名”的北极熊出来对着兴奋的游客摆姿势时，抢拍下了这一场景(见图)。
During a cruise through Svalbard in the Arctic, 54-year-old Swedish photographer Hans Strand snapped the fame-hungry bear as he came out to pose for the excited crowd (see photo).
54岁的瑞典摄影家汉斯·斯特兰德在这只“渴望成名”的北极熊出来对着兴奋的游客摆姿势时，抢拍下了这一场景(见图)。
During a cruise through Svalbard in the Arctic, 54-year-old Swedish photographer Hans Strand snapped the fame-hungry bear as he came out to pose for the excited crowd (see photo).
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