The safety and efficacy of a vaccine are the most important criteria in its development.
疫苗的安全性和有效性是其研发中最重要的标准。
The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.
Quality is more important than quantity. One home run is much better than two doubles.
I'm not a politician, I'm just a person who cares.