把这一句，留给此刻的你
My proposal now is to test a vaccine first on people who have been infected, and if you show some efficacy at this level, you might be able to go further to study uninfected people in a population with a high rate of infection.
我现在的建议是先在已经感染的人身上测试一种疫苗，如果你在这个水平上显示出一些效果，你或许可以进一步研究未感染人群中感染率高的人群。