Archaeologists identify a corresponding shift in populations toward the south and west toward Mesa Verde and away from higher elevations.
考古学家发现了一个人口迁移现象，人们向西部、南部的梅萨维德地区搬迁，离开了高海拔地区。
In the face of all these pushes, people in the Mesa Verde area had yet another reason to move into communal villages: the need for greater cooperation.
在所有这些推动力面前，梅萨维德地区的人们提出了另外一个搬进公共村庄的理由：他们需要更多合作的机会。
The environmental changes associated with this transition are not fully understood, but people living closest to the San Juan Mountains, to the northeast of Mesa Verde, were affected first.
与这一变迁相关的环境变化并未得到人们的充分认识，但是离位于梅萨维德东北部的圣胡安山脉最近的居民却首先受到了影响。
About nine hundred years ago, the Ancestral Puebloan people built villages high in the walls of canyons in Mesa Verde,Colorado.
VOA: special.2009.03.04
Six hundred cliff dwellings are now part of the Mesa Verde National Park.
VOA: special.2009.03.04
Mesa Verde National Park occupies twenty-one thousand hectares of land.
VOA: special.2011.03.30
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