Such a change could mark the start of a global outbreak (a pandemic).
这种变异可能意味着全球暴发(大流行)的开始。
WHO started the Global Outbreak Alert and Response Network five years ago.
世卫组织于五年前开始运行全球疾病暴发预警和应对网络。
A pandemic is a global disease outbreak.
所谓大流行就是暴发全球性疾病。
A pandemic is a global disease outbreak.
所谓大流行就是暴发全球性疾病。
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