But Congressional Republicans say the president is not doing enough In a written statement, to create jobs.

VOA: standard.2010.01.25

It's not enough to understand the biology of how to create a vaccine, if you can't make enough of the vaccine or deliver it to people in ways that it's useful.

仅仅知道疫苗制造的,生物学原理是不够的,还得能生产出足够的疫苗,并在公众中广泛使用

耶鲁公开课 - 生物医学工程探索课程节选