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。
There was an outbreak of chickenpox at my son's school which spread like wildfire until nearly half the children caught it.
我儿子的学校里突然爆发的水痘象野火般迅速传开来，差不多有一半孩子染上了。收藏。
There was an outbreak of chickenpox at my son's school which spread like wildfire until nearly half the children caught it.
我儿子的学校里突然爆发的水痘象野火般迅速传开来，差不多有一半孩子染上了。收藏。
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