最终系统会扩展到很大的适用人群。
适用人群:暗疮、外伤产生的红印。
美国膳食指南一般来说,适用人群是2岁及以上。
Dietary Guidelines recommendations traditionally have been intended for healthy Americans ages 2 years and older.
You want to give it to people in different communities, to make sure that it works in all the subpopulations where the vaccine's potentially valuable.
研究者希望将疫苗分接种于不同人群,以确保疫苗适用于所有人,这样才能体现疫苗的价值
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