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https://hoohao.wordpress.com/2018/02/02/%e5%b0%9d%e9%b2%9c%e4%ba%91%e7%ab%af%e5%9c%b0%e5%9b%be%e6%9c%8d%e5%8a%a1-azure-location-based-service-preview/
尝鲜云端地图服务 Azure Location Based Service Preview