absolute immunity

• 绝对免疫性

absolute immunity的用法和样例：

例句

1. The immunity achieved is generally brief and must be boosted.
   所获得的免疫性一般是短暂的，须激发注射。
2. Hepatitis A is endemic in most developing countries, and most children are exposed and develop immunity at an early age.
   型肝炎是大多数发展中国家的一种地方病，而大多数孩子因为在很小的时候曾患病而具有免疫性。