Well, a new study in the journal Cell says you can thank your amygdala for that. Because this key member of the brain’s fear circuitry can directly sense suffocation, and trigger feelings of terror.

根据《细胞》杂志所说，这种情绪的涌现都是扁桃体的错，因为这个大脑恐惧线路的关键的小东西可以感知窒息状态并触发恐惧情绪。

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But last week the results of the first large-scale study, published in the Lancet, found that firefighters in the terror attacks had a 19% higher risk of contracting cancer.

但上星期，刊登于《柳叶刀》的首个此类大型研究显示，9·11事件中参与救助行动的消防员罹患癌症的比率比一般人要高出19%。

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