种痘
Vaccination immunizes one against smallpox.
接种牛痘能使人免患天花.
Smallpox can be contained by vaccination.
种牛痘疫苗可以控制住天花.
Vaccination for smallpox is efficacious.
种牛痘防天花是有效的.
We're immune to smallpox as a result of vaccination.
我们种了牛痘,所以不会得天花.
I'm immune to smallpox as a result of vaccination.
我种过牛痘了,所以对天花有免疫力.
Vaccination is a preventive against smallpox.
种痘是预防天花的方法
Vaccination immunizes people against smallpox.
种牛痘可以免患天花.
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