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Longman English Dictionary - the leading dictionary for learners of English of all levels: definitions, idioms, examples and more.

See current wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Updated every three hours.

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d-maps: Free maps, free outline maps, free blank maps, free base maps, all the countries of the world, high resolution GIF, PDF, CDR, AI, SVG, WMF

Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey

自动提取建筑、道路、森林

AI Earth数知地球，依托于阿里巴巴在深度学习、计算机视觉等方向上的技术积累，对卫星影像、无人机影像、实时视频流、气象数据、IoT数据等多源地球观测数据进行融合分析，实现建筑、土地、植被、河流等多种目标信息的智能解译及变化感知，为自然资源监管、水利河道治理、生态环境保护、农业估产和金融保险等多个领域提供成熟的解决方案。

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