美加贸易战升级，庞巴迪股价下跌
Bombardier’s stock drops as the U.S.-Canada trade war intensifies. Here’s what Trump may target next.
The trade battle — featuring steep import taxes and possible bans — could escalate further as soon as today.
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