美国国家运输安全委员会的调查人员已被派往华盛顿州倒塌大桥的事故现场。
Investigators with a National Transportation Safety Board are being dispatched at the site of a collapsed bridge in Washington State.
国家运输安全委员会正在对周六发生在密苏里的火车碰撞事故进行调查。
The national transportation safety board is investigating the cause of Saturday's train collision in Missouri.
美国国家运输安全委员会正在对事故进行调查。
The National Transportation Safety Board is investigating the crash.
美国国家运输安全委员会正在对事故进行调查。
The National Transportation Safety Board is investigating the crash.
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