单词：Ptolemy's theorem
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Why Are Maps Drawn with North at the Top? Now it is hard to visualize a map that does not feature north at the top, but this was not always so. The oldest known map in the accepted sense of the word w
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Books and Arts; Book Review; 文艺；书评； A history of mapmaking;Views of the world; 地图史;世界景象; There is no such thing as an objective map; 准确地图谁见了; A History of the World in Twelve Maps. By Jerry Brotton. 《12幅地图
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Excavations at Tel Kedesh, Israel, under the auspices of the University of Michigan and University of Minnesota, have discovered a gold coin which is the oldest to date in the country. Scientists believe it was minted in Alexandria around 191 BC and
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【原文】 Why Are Maps Drawn with North at the Top? Now it is hard to visualize a map that does not feature north at the top, but this was not always so. The oldest known map in the accepted sense of the word was drawn about 3,800 BC, and represen
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