如果我看到一群病患，这里有可能有传染病，那么我最好把自己的免疫系统再开高一个档。
If I see a bunch of sick people, maybe a big infection is around, and I better kick my immune system into high gear.
如果我看到一群病患，这里有可能有传染病，那么我最好把自己的免疫系统再开高一个档。
If I see a bunch of sick people, maybe a big infection is around, and I better kick my immune system into high gear.
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