第二次免疫
双语例句原声例句
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它们共同作用引发一种免疫反应，在第二次活动前就击退入侵的寄生虫。
Together, these trigger an immune response which can fight off invading parasites before the second act.
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“这次活动主要是为了第二次未接种或接种无效果的儿童增强免疫”，他说。
"It's a catch-up campaign to boost the levels of immunity among children who may have missed the second dose, or in whom one of the doses was not effective," he said.
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已经得过水痘的小孩会对它免疫，所以不会再得第二次。
Children who have gotten the chickenpox build an immunity to it so that they do not get it a second time.
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The response to the second exposure in antigen is different in a couple of ways.
第二次接触相同抗原,免疫系统的应答,在以下几个方面是不同的
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