Most notoriously,Oprah's validation of jenny McCarthy's claim that vaccines cause autism(自闭症)has no doubt contributed to much harm through the foolish avoidance of vaccines.
出自-2014年6月阅读原文
柯林斯高阶英汉双解学习词典释义
N-MASS
疫苗
A vaccine is a substance containing a harmless form of the germs that cause a particular disease. It is given to people, usually by injection, to prevent them getting that disease.