沙漠形成演化是第四纪古气候、古环境研究的重要内容之一。
Evolution of desert is one of important aspect of Quaternary paleoclimate and paleoenvironment research.
三座火山峰顶被白雪覆盖，与周遭Puna Plateau沙漠形成鲜明的对比。
The snowy peaks of the three volcanoes provide a stark contrast to the surrounding desert of the Puna Plateau.
被南部的祁连山、东部的黄河所束缚，腾格里沙漠形成了内蒙古的南部边界。
Hemmed by the Qilian mountains in the south and the Yellow river in the east, the desert forms the southern border of Inner Mongolia.
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