However, these minor "mutations" cannot change what the virus does, only what it looks like.

尽管如此，这些小型的“突变”并不能改变病毒的行为，而仅仅是它的外表。

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And we will generate antibodies only if we get infected by the virus or vaccinated with a killed version of it; either way will teach the immune system what it looks like.

只有我们感染了这种病毒或接种了灭活的疫苗才能产生相应抗体，因为这两种方法均可以让我们的免疫系统认识这种病毒。

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And we will generate antibodies only if we get infected by the virus or vaccinated with a killed version of it; either way will teach the immune system what it looks like.

只有我们感染了这种病毒或接种了灭活的疫苗才能产生相应抗体，因为这两种方法均可以让我们的免疫系统认识这种病毒。

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