两年前，世界卫生组织发出警告，H1N1型流感或扩展至全球范围，导致数百万人死亡。
Just two years ago, H1N1 influenza was supposed to spread around the globe and kill millions, according to the World Health Organization.
两种日益流行的社会企业模式是混合型非营利组织和社会商业。
Two increasingly popular forms of social enterprises are hybrid nonprofits and social businesses.
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