孩子答到：“我觉得好奇怪啊，为什么爸爸你这几天一直背着妈妈呢?。
The child replied: "I feel weird ah, why do you these days my father has been carrying a mother?"
答：这可以追溯到基金会如何形成的根源：比尔及梅琳达·盖茨读到有关他们的孩子能够获取的轮状病毒疫苗的内容。
A: It goes back to the roots of how the Foundation came into being: Bill and Melinda Gates read about the rotavirus vaccine that their children had access to.
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