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让孩子不生病是不可能的,因为我们生活在一个充斥着细菌和病毒的世界里,所以让孩子尽量少生病,是家长们关切的问题,也是医学工作者多年来研究的问题。在
It is impossible for children not to get sick. Because we live in a world full of bacteria and viruses, it is a concern for parents and a problem that medical workers study for many years. in