任何科学家都可以认为进化论是一个正在传播的理论，就像万有引力学说，广义相对论，大爆炸论一样。

Any scientist would say that evolution is a theory, just as gravity, general relativity, the Big Bang, and so forth are theories.

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说明：“扫荡”系指在确认正在传播的脊髓灰质炎病毒后4周内迅速和大规模挨家挨户免疫应对。

Note: A 'mop-up' refers to a rapid and massive, house-to-house immunization response within four weeks of confirmation of a circulating poliovirus.

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目前，尽管已探测到了通常在冬季才达到顶峰的季节流感，但90%正在传播的流感是H1N 1流感。

Right now, about 90 percent of the circulating flu is H1N1, although seasonal flu, which typically peaks in winter, has also been detected.

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They take it, the vaccine itself, the virus, reproduces in their gut and they can actually spread it to other children in the same way that they spread the disease where you've got children that are maybe at school or at childcare.

他们服用了疫苗,则疫苗菌本体,病毒本体便在他们的体内进行繁殖,实际它们以同样方法传播到其他孩子体内,当你去学校或者幼儿园,接你的孩子的时候,这些病毒正在传播

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