He proposed a national program to immunize children.他提出了一项为儿童进行免疫接种的全国性计划。

The monkeys had been immunized with a vaccine made from infected cells.这些猴子通过注射受感染细胞培养的疫苗获得了免疫力。

Every student is immunized against hepatitis B.每个学生都接种了乙肝疫苗。