They're called the " Last Gift cohort." And to test in these altruistic patients next year, we have to finish our preclinical tests this year ...

他们被称为“最后的礼物队列” 。 为了明年在这些无私的患者身上进行测试，我们必须在今年完成我们的临床前测试. . . . . .

The goal of preclinical tests is to see if the vaccine truly works on the pathogen -- in this case, the virus that causes COVID-19 -- and also to test the safety of a vaccine.

临床前测试的目的是查看疫苗是否真的对病原体起作用——在这种情况下，是导致 COVID-19 的病毒——并测试疫苗的安全性。