位于华盛顿特区附近的一次中空碰撞造成67人死亡,目前正在接受国家安全局的调查,其中列举了系统性故障和多重错误。 A midair collision near Washington, D.C., killing 67, is under investigation by the NTSB, which cites systemic failures and multiple errors.

国家运输安全委员会正在举行为期一天的听证会,以调查在华盛顿特区附近发生致命的中空碰撞导致67人死亡的原因。 The National Transportation Safety Board is holding a daylong hearing to investigate the causes of a deadly midair collision near Washington, D.C., that killed 67 people. NTSB将“系统失灵”和“多重错误”确定为促成因素,但具体细节仍在审查之中。 The NTSB has identified "systemic failures" and a "multitude of errors" as contributing factors, though specific details remain under review. 听证会旨在检查导致坠机的事件和安全失误的顺序。 The hearing aims to examine the sequence of events and safety lapses that led to the crash.