Among parent,this was fulled by social media,with up to half
exprosed to negative messages about vaccines.
目前读到一篇bbc文章,主题主要是在讲 家长接收到疫苗的负面讯息而对小孩接踵疫
苗感到恐惧,上面句子中不太明白with up to half exprosed to negative
messages指的是有多达一半的人(家长)接触到疫苗的负面讯息
还是指有多达一半的疫苗负面讯息"被揭露"?
谢谢各位英文大师^^