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丹麦首相誓言保卫格陵兰，特朗普再提控制
Denmark PM vows to defend Greenland after Trump revives push for U.S. control
Danish Prime Minister Mette Frederiksen delivered a rebuke to President Donald Trump's latest push for U.S. control of Greenland.
更进一步：量化金融体系
看懂新闻只是起点——沿量化金融路径，把它变成能交付的工程能力