-
So, this is the stage at which you prevent disease in the Salk vaccine.
那么,这就是索尔克氏疫苗,防止疾病传播的方法
应用推荐
$firstVoiceSent
- 来自原声例句
So, this is the stage at which you prevent disease in the Salk vaccine.
那么,这就是索尔克氏疫苗,防止疾病传播的方法
应用推荐