Emergent events in urban rail transit threaten the safety and order of the network. Heavy events will result in operation interruption, serious train delay and also passenger delay.
突发事件威胁城市轨道交通网络的安全与秩序，严重的将导致运营中断和列车与乘客的大规模延误。
Emergent events in urban rail transit threaten the safety and order of the network. Heavy events will result in operation interruption, serious train delay and also passenger delay.
突发事件威胁城市轨道交通网络的安全与秩序，严重的将导致运营中断和列车与乘客的大规模延误。
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