2001年9月11日,美国标志性建筑世贸中心和国会五角大楼分别遭到恐怖分子“飞机导弹”的袭击,引起建筑物的倒塌、着火和重大人员伤亡,一时间,美国民航机场全部关闭,纽约和华盛顿进入戒严状态。这是美国自1941年珍珠港事件以来第一次遭受到如此重 On September 11, 2001, the U.S. landmark World Trade Center and the Congress’s Pentagon were attacked by terrorist “aircraft missiles,” causing buildings to collapse, fire, and heavy casualties. For a time, the US civil aviation airport was completely closed. And Washington entered martial law. This is the first time that the United States has suffered so much since the Pearl Harbor incident in 1941.