emergency alert level 紧急警戒级别
alert-level standard 警示标准
Pandemic Alert Level 流行病警戒级别 ; 大流行警戒等级
Low alert level 低级警告级别
High alert level 高级警告级别
Medium alert level 中级警告级别
Severe alert level 严重警告级别
drivers alert level 驾驶员觉醒水平
Nations prepare as World Health Organization raises the alert level.
国内为世卫组织提升警报级别做好准备。
Currently the alert level stands at five out of six meaning a pandemic is imminent.
现在的警戒水平处于六个级别中的第五级,这意味着流行性疾病即将发生。
The WHO's alert level for the virus remains at phase five of six, meaning a global outbreak is imminent.
猪流感病毒在世卫组织的六个警戒级别的仍然在第五级,这意味着马上就要全球爆发。
For the first time the W.H.O.raised its alert level from phase four to phase five on April twenty-ninth.
VOA: special.2009.05.06
because all we konw now it's orange alert, the alert level has gone up or gone down We don't really know what it goes on behind the scene.
我们都知道现在是橙色警报,警戒线时高时低,我们真的不知道,事情背后是如何处理的。
World Health Organization Director-General Margaret Chan said the alert level was stepped up because influenza viruses are unpredictable and can spread quickly around the world.
VOA: standard.2009.04.29
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