translation.en: Because these technologies are so efficient and relatively cheap, billions of people can have access to lifesaving vaccines if we can figure out how to deliver them.
translation.zh: 因为这些技术如此高效率 而且相对便宜。 那么几十亿的普通大众也能接种这种救命的疫苗。 如果我们构想出销售这些疫苗方式。