我的其他孩子自然得的水痘，它一点都没有伤害到他们中的任何一个。
My other children caught chickenpox naturally and it never hurt any of them.
已经得过水痘的小孩会对它免疫，所以不会再得第二次。
Children who have gotten the chickenpox build an immunity to it so that they do not get it a second time.
已经得过水痘的小孩会对它免疫，所以不会再得第二次。
Children who have gotten the chickenpox build an immunity to it so that they do not get it a second time.
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