特朗普对加拿大和中国的关税引发报复行动后，美国股市下跌。 US stock market drops after Trump tariffs on Canada and China trigger retaliatory actions.

在特朗普总统宣布对加拿大和中国征收新关税后，美国股市大幅下跌，道琼斯指数下跌超过 400 点。 The U.S. stock market dropped significantly after President Trump announced new tariffs on Canada and China, with the Dow Jones falling over 400 points. 加拿大以自己的关税进行报复，影响了美国产品。 Canada retaliated with its own tariffs, affecting American products. 墨西哥推迟了关税应对措施，略微缓解了市场担忧。 Mexico delayed its tariff response, slightly easing market concerns. 总体而言，对贸易战的担忧影响了全球市场。 Overall, fears of a trade war impacted global markets.