Giri, and his team of 30 interns and visiting scientists at the U.S. Geological Survey, used more than 1, 000 satellite images to make their mangrove map.

钱德拉·吉里和他的队伍中的30名实习生和在美国地质调查局的访问学者，利用1000多幅卫星图片最终整合成了红树林地图。

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So, a topographic map, this one from the US geological survey shows you, basically, all the level curves of an altitude function on a piece of land.

这是一幅由美国地形勘测出来的地形图，基本上，所有海拔等高线在一块陆地上。

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Data for the map were obtained from U. S. Geological Survey (USGS) and Environmental System Research Institute (ESRI).

地图数据源自美国地质调查局及环境系统研究所。

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But a report by the British Geological Survey to map out where Britain's gas reserves are has been commissioned by the Department of Energy.

BBC: Autumn statement: A future for shale gas in Wales?

Using that entirely automated system and data from the U.S. Geological Survey, the entire world map was carved in just over two minutes.

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