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You end up with a new strain that has easy transmissibility .
到最后，你可能会产生一种具有易传染能力的新毒株。
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There are two crucial factors: the transmissibility of the virus, and its virulence.
有两个关键因素：病毒的传播性和其毒性。
youdao
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There are two crucial factors: the transmissibility of the virus, and its virulence.
有两个关键因素：病毒的传播性和其毒性。
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