“现在对中世纪温暖期还不甚明了的是彼时美国西部地区的温暖程度，”史威特南说。
"What's not so well known about the Medieval warm Period is how warm it was in the western U.S.," Swetnam said.
南贵昆经济区是中国西部地区重要的国土开发主轴，它具有在区位、资源和市场方面的比较优势。
The NanningGuiyangKunming economic region is a principle axis in the land development in Western China. It enjoys comparative advantage in location, resources and market.
南贵昆经济区是中国西部地区重要的国土开发主轴，它具有在区位、资源和市场方面的比较优势。
The NanningGuiyangKunming economic region is a principle axis in the land development in Western China. It enjoys comparative advantage in location, resources and market.
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