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  1. ..., My Oregon. Land of the rose and sunshine, Land of the summer s breeze;Laden with health and vigor, Fresh from the western seas.Blest by the blood of...

    分類:科學 > 地理學 2006年01月01日

  2. ...will change forest, agricultural obtaining amount and water supply and threaten health , danger birds, fish even other more ecosystems. 沙漠也許會向...rainfall of orientation and evaporation capacity, trend of strong storm and drier land .

    分類:科學 > 地理學 2007年12月10日