双语例句原声例句
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即使在感染你的时候，感冒病毒也会发生变异，而且新的病毒毒株经常出现，以至于当制药商研制出针对其中一种变异的疫苗时，血清已经过时了。
Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.
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Astrogenetix利用这快速繁殖和超活性状态去遥控沙门氏菌负责感染的基因然后去除这强毒基因以建立疫苗弱毒株。
Astrogenetix took advantage of that fast-growing, super-active state to home in on the salmonella genes responsible for infectiousness, and then removed said genes to create a weak vaccine strain.
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我们还注意到，最近出现了新的H5N1型禽流感毒株，有可能导致目前使用的疫苗无法充分保护禽类不受疾病的侵染。
We have also observed that new H5N1 avian influenza virus strains have recently emerged creating the possibility that vaccines currently in use may not be fully protecting poultry against the disease.
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We talked about attenuating in the laboratory, using cell culture techniques and what we know about mutating viruses.
我们讲过实验室中,利用细胞培养技术培养减毒疫苗,以及我们所了解的减毒病毒
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And so this is an example of a naturally occurring, attenuated vaccine.
这就是一个天然减毒疫苗的例子
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He produced an oral polio vaccine from an attenuated virus.
他利用减毒病毒制得口服小儿麻痹症疫苗
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