求翻译：我的感受是：一个未满18岁的未成年是不能献血的，一般20-45岁才是献血时期。我们想一想：如果你是一个病患者，需要大量的血，那么，你肯定需要别人献血给你。既然这样，我们献血也是为了公民，为社会做出了贡献…是什么意思？

My feeling is: a minor under 18 years of age are not blood, typically 20-45 is the period of blood donors. We think about it: If you are a sick, needs a lot of blood, then you definitely need blood for you. In that case, we are blood donors but also to citizens, contributed to the society SB