免疫力的用法和样例：
例句
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抗体，免疫体血液或组织针对某种抗原如细菌或毒素而产生的蛋白质物质。抗体消灭细菌或削弱其作用，中和有机毒素，因而形成免疫力
A protein substance produced in the blood or tissues in response to a specific antigen, such as a bacterium or a toxin. Antibodies destroy or weaken bacteria and neutralize organic poisons, thus forming the basis of immunity. -
我种过牛痘了，所以对天花有免疫力。
I'm immune to smallpox as a result of vaccination. -
接种这种疫苗可有两年免疫力。
This vaccine will give you immunity for two years.
