The World Health Organization raised its alert level but stopped short of declaring a global emergency.
世界卫生组织已经提高了警戒级别，但并没有宣布全球进入紧急状况。
A third weakness is the absence of a formal alert level of health risk other than the declaration of a public health emergency of international concern, or PHEIC.
第三个弱点就是除了宣布为国际关注的突发公共卫生事件之外，尚缺少一种针对卫生危险的正式警报等级。
The emergency services raised their alert level to the highest.
应急服务机构将警戒程度提到最高水平。
The emergency services raised their alert level to the highest.
应急服务机构将警戒程度提到最高水平。
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