核升级的威胁依然存在。

The threat of nuclear escalation remains.

《柯林斯英汉双解大词典》

除非成果即将诞生，否则围绕伊朗核野心展开的漫长剧作将可能迅速升级为一场全球危机。

And unless results are forthcoming, the long-running drama over Iran's nuclear ambitions could rapidly escalate into a global crisis.

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根据该重置计划，M113装甲车将恢复到战备状态，并升级装甲，提升核、生物及化学防护装备。

Under the reset program, the M113 vehicles will be brought back to combat-ready condition and gain add-on armor and nuclear, biological, and chemical protective equipment.

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