You know how flu viruses mutate.
你知道病毒如何发生变异。
The virus did not mutate to a more virulent form.
病毒没有变异为致命性更强的形态。
But why do those genes mutate in the first place?
但为什么这些基因会发生变异呢？
"The virus could still suddenly mutate," he told reporters.
“病毒任然可能突然的突变，”他告诉记者。
But they can make larger leaps.They also mutate as they go.
但是它们也能有更大的飞跃。它们移动的同时也在变异。
The virus could still mutate to become more severe, she warned.
她警告说，病毒仍有可能变异，变得更厉害。
Then we use free function mutate (mutant) to get the view.
然后我们用普通函数mutate (mutant)来获得视图。
The virus could still mutate to become more severe, she warned.
她警告说，病毒仍然有可能变异，变得更厉害。
Scientists warn that the virus could mutate into a much deadlier form.
科学家们警告，该病毒可能变异成更致命的形式。
SIV can mutate into a form that allows it to pass from human to human.
因为SIV能变异成能在人类中传播的病毒。
While it's only a single strand right now, it can mutate into other strands.
而这仅是一个单链，现在，它可以变异成其他方面。
While it's only a single strand right now, it can mutate into other strands.
而这仅是一个单链，现在，它可以变异成其他方面。
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