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.A health worker immunizes an infant in Nepal.医疗工作者在尼泊尔为婴儿注射预防针....

n.使某人免疫( immunize的名词复数 )...

immunizes的音标：...