Now, if we take a step back and think about these other two really important advantages: One is improved immune responses through delivery, and the second is getting rid of the cold chain.
现在，我们退后一步想一想 它其它两个非常重要的优势： 一是它通过特殊的接种方式提高了免疫反应， 二是它没有冷链要求。