提醒:美国总统特朗普开始在匹兹堡一场关于美国钢铁公司(X)的活动上讲话。
Group 1 - The event is focused on the American steel industry, specifically highlighting the activities of U.S. Steel Corporation (X) [1]
Group 1 - The event is focused on the American steel industry, specifically highlighting the activities of U.S. Steel Corporation (X) [1]