vaccination immunizes people against smallpox . 种牛痘可以免患天花。
vaccination immunizes one against smallpox . 接种牛痘能使人免患天花。
vaccinations and debeaking produce stresses . 接种疫苗和断喙可产生应激。
This is the result of an intensive vaccination program for pets, primarily dogs and cats . 这是加强对牲畜首先是犬和猫大规模的预防接种计划的结果。
The officer is inspecting his passport, health certificate, vaccination certificate, and so on . 那个官员在检验他的护照、健康证书、免疫证书等等。
In addition, the immunity produced so far lasts only three to six months, so frequent vaccinations would be necessary . 再则，至此产生的免疫只能持续三至六个月,因此需要经常种痘。
vaccination with weakened or killed viruses arouses these antigens in exactly the same way, producing immunity without infection . 用减弱了的或者是死的病毒去接种，能同样地引出这些抗体，从而既产生免疫但又不发生感染疾病。
Thoughts on the law side of the vaccination behavior 关于预防接种行为的法律思考
Dog and cat vaccinations . too many, too often ? 二猫与狗的疫苗接种太多太频繁？
If there's no take, you must get vaccination again 如果疫苗不发,你得再接种一次
