北京环保部门昨天发布的空气质量数据显示“严重污染”，表明即便是健康人群也会受到影响。
The air Quality Index from Beijing environmental authorities showed the air was "heavily polluted" yesterday, meaning that even healthy people could suffer effects to their health.
北京环保部门昨天发布的空气质量数据显示“严重污染”，表明即便是健康人群也会受到影响。
The air Quality Index from Beijing environmental authorities showed the air was "heavily polluted" yesterday, meaning that even healthy people could suffer effects to their health.
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