The Department of Homeland Security raised its colour-coded threat warning to red, for certain flights, for the first time since its inception.
美国国土安全局将威胁警报设为红色，这是自设立以来的第一次。
The WHO moved a meeting scheduled for Tuesday to Monday to decide whether to raise its pandemic threat warning level by a notch, from 3 to 4 (on a scale of 6).
世界卫生组织将一项会议安排从周二提前到周一，会上将确定是否将其流行病威胁预警调高一个等级，从3调至4（总共有6个等级）。
The JATAS program will provide the next generation threat warning system to protect U.S.Navy and Marine Corps assault aircraft for increased survivability in hostile environments.
该JATAS项目将提供下一代威胁预警系统，以保护美国海军和海军陆战队攻击机，增加在恶劣环境的生存能力。
The JATAS program will provide the next generation threat warning system to protect U.S. Navy and Marine Corps assault aircraft for increased survivability in hostile environments.
该JATAS项目将提供下一代威胁预警系统，以保护美国海军和海军陆战队攻击机，增加在恶劣环境的生存能力。
The JATAS program will provide the next generation threat warning system to protect U. S. Navy and Marine Corps assault aircraft for increased survivability in hostile environments.
该JATAS项目将提供下一代威胁预警系统，以保护美国海军和海军陆战队攻击机，增加在恶劣环境的生存能力。
The F-15's electronic warfare system provides both threat warning and automatic countermeasures against selected threats.
F - 15的电子战系统能自动提供告警，并对选定的目标实施自动电子对抗。
The F-15's electronic warfare system provides both threat warning and automatic countermeasures against selected threats.
F - 15的电子战系统能自动提供告警，并对选定的目标实施自动电子对抗。
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