美国化学品安全委员会表示,这一升级可能或至少减弱那场导致15人死亡、500人受伤的大爆炸。
The US Chemical Safety Board said the upgrade would have prevented - or at least mitigated - the blast that killed 15 and injured 500.
美国化学品安全委员会表示,这一升级可能或至少减弱那场导致15人死亡、500人受伤的大爆炸。
The US Chemical Safety Board said the upgrade would have prevented - or at least mitigated - the blast that killed 15 and injured 500.
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