It mutates the DNA directly. But most of what we see seems to be reversible.
辐射直接使DNA变异，但是我们看到的辐射光大部分是可逆的。
The reason is that the influenza virus mutates much more rapidly than most other viruses.
原因在于，流感病毒的变异比其它类型病毒的变异快得多。
The reason is that the influenza virus mutates much more rapidly than most other viruses.
原因在于，流感病毒的变异比其它类型病毒的变异快得多。
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