1·By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。
2·Romance Poetry emerged a few generations after Chanson, and its roots were in geographic regions of France that were calmer, where conflict wasn't central to people's lives.
浪漫主义诗歌出现在香颂之后的几代人的时间里，它的根源在法国的地理区域，那里比较平静，冲突不是人们生活的中心。
3·These prior efforts all examine the degree to which different environmental, social, and geographic variables correlated with a number of languages found in a given location.
这些先前的研究都考察了不同的环境、社会和地理变量与在特定地点发现的多种语言之间的关联程度。
4·They argue that the first hunter-gatherers to develop rice agriculture must have done so in this southern zone, within the apparent present-day geographic range of wild rice.
他们认为，最早发展水稻农业的狩猎采集者一定是在这个南部地区，在现在野生水稻明显的地理范围内。
5·These prior efforts all examined the degree to which different environmental, social and geographic variables correlated with the number of languages found in a given location.
这些先前的研究都审查了不同的环境、社会和地理变量与某一地点所发现的语言数目之间的关系。
1·The most common projection after geographic (latitude and longitude) is the transverse Mercator projection.
地理学投影（维度和经度）之后，最常用的投影是横向 Mercator 投影。
2·Similar patterns exist throughout the U. S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.
相似的模式在全美都存在。通过测量一缕头发中较重的氢氧同位素的比例，科学家们可以构建一个地理学的时间轴。
3·Geographic languages are very important medias for human beings to explore the earth environment and to exchange geographic information.
地理学语言是人类认识地球环境和人类社会交流与传递地理信息的重要媒介。
4·Regional geography is one important part of geographic education and research.
区域地理是地理学教育与研究的一个重要组成部份。
5·Finally, based on above works, approaches and measures are put forward to strengthen the geographic foundation of GIS profession.
首先通过对GIS专业性质的分析，指出强化GIS专业地理学基础的重要性和必要性。