Christine Biron: the thing about the immune system, is really everyday it keeps us from succumbing to the microbes in our environment.
克里斯廷·拜伦：说到免疫系统，它的确每天都在保护我们不被环境中的微生物侵害。
Christine Biron: the thing about the immune system, is really everyday it keeps us from succumbing to the microbes in our environment.
克里斯廷·拜伦：说到免疫系统，它的确每天都在保护我们不被环境中的微生物侵害。
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