WMO Secretary-General Michel Jarraud says countries must have the tools to adapt to a changing climate.

VOA: standard.2009.08.30

And that will bring us to a general discussion of sort of the tools that are available now for vaccine development, which we'll talk about on Thursday.

并且进一步探讨,现阶段推动疫苗发展的方法,我们会在星期四讨论这些

耶鲁公开课 - 生物医学工程探索课程节选