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特朗普称美国未同意向乌克兰发放爱国者导弹生产许可
Trump says U.S. has 'not agreed to' grant Ukraine Patriot missile licenses
President Donald Trump said the U.S. hasn't agreed to grant Ukraine licenses to produce Patriot missile systems.
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