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（来源：CGTN）
转自：CGTN
【这种航海“手账”还是太全面了】《更路簿》是一种海南渔民世代相传的手抄航海指南，里面不仅有文字记载，还有“手绘”图例。《更路簿》中的“山形水势图”，上绘山形，下写针路，包括水深、水色等。在鲜少参照物的茫茫大海中，航海者通过比对“山形水势图”，来判断自己的位置。#更路簿# #穿越南海# #海上丝绸之路#Long before modern maps, Genglubu navigation manuscripts contained written records of routes and hand-drawn illustrations, including mountain contours and water depth markings, to help mariners identify islands, reefs and coastlines.
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