Officials say they can't yet confirm the cause of what they are calling a "mass casualty event", or the number of people who were on board the trains.
相关官员称，他们还不能确认这场“重大灾难事件”的原因，也不能确认车上乘客的数量。
Officials say they can't yet confirm the cause of what they are calling a "mass casualty event", or the number of people who were on board the trains.
相关官员称，他们还不能确认这场“重大灾难事件”的原因，也不能确认车上乘客的数量。
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