名词
中文翻译：保护性免疫力
同义词：
['protective immunity', 'immune protection例句：1. The vaccine provides a protective immunity against the disease.（这种疫苗提供了对疾病的保护性免疫力。）2. The new drug has been shown to have a protective immunity against cancer.（新药已被证明具有抗癌的保护性免疫力。）3. The study found that the virus had developed a protective immunity to the vaccine.（研究发现，该病毒已经发展出了对疫苗的保护性免疫力。）']
例句：
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1. The vaccine provides a protective immunity against the disease.
这种疫苗提供了对疾病的保护性免疫力。
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2. The new drug has been shown to have a protective immunity against cancer.
新药已被证明具有抗癌的保护性免疫力。
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3. The study found that the virus had developed a protective immunity to the vaccine.
研究发现，该病毒已经发展出了对疫苗的保护性免疫力。