当地时间4月15日，美国波士顿马拉松比赛终点线附近发生爆炸，目前造成至少3人死亡141人受伤。美国总统奥巴马在爆炸发生后3个多小时后发表全国电视讲话。以下为全文内容：

　　Good afternoon, everybody. Earlier today, I was briefed by my homeland security team on. We're continuing to monitor and respond to the situation as it unfolds. And I've directed the full resources of the federal government to help state and local authorities protect our people, increase security around the United States as necessary, and investigate what happened。

　　大家下午好。我刚刚听取了了国土安全局就波士顿爆炸事件的汇报。我们将继续根据事件进展进行监测和应对。我已下令联邦政府动用全部资源，协助州和地方当局保护人民的安全，必要时候要增加警备提高安全性，并密切调查事件进展。

　　The American people will say a prayer for Boston tonight. And Michelle and I send our deepest thoughts and prayers to the families of the victims in the wake of this senseless loss。

　　美国人民今晚会为波士顿祈祷。米歇尔和我把我们最深切的思念和祈祷传递给受难者及其家属，对他们失去亲人表示哀悼。

　　We don't yet have all the answers. But we do know that multiple people have been wounded, some gravely, in explosions at the Boston Marathon。

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