精选70CNBC 财经（RSS）股市
达美航空推出无休息室与选座权的“基础商务舱”
Delta launches 'basic business' fares without lounge access, seat selection
Delta is launching basic business and other stripped-down premium classes that come with fewer perks.
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