• The slow pace of recovery is bad news for more than a million Americans who will stop receiving unemployment benefits after Congress adjourned for the holiday weekend without extending federal aid.

    VOA: standard.2010.07.02

  • One can stop spread of disease through a community without being 100% effective in each person who gets the vaccine.

    疫苗能够遏制疾病在整个社区中传播,虽然对于每个人来说它并非百分之百有效

    耶鲁公开课 - 生物医学工程探索课程节选

  • One can stop spread of disease through a community without being 100% effective in each person who gets the vaccine.

    疫苗能够遏制疾病在整个社区中传播,虽然对于每个人来说它并非百分之百有效

    耶鲁公开课 - 生物医学工程探索课程节选

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