1964年，一个研究小组在洛杉矶进行实验，测试豚鼠对于烟雾的反应。
A research team tests a guinea pig's reaction to smog in a 1964 L.A. experiment.
无论你暴露在何种程度的烟雾环境中，你的肺部细胞都知道并且会做出反应。
No matter what level of exposure of smoke you have, your lung cells know it and they are responding.
较为一般的情况是，室内烟雾中的微小颗粒物及其它污染物可使气道和双肺出现炎症，对免疫反应带来损害并且会降低血液携带氧气的能力。
More generally, small particulate matter and other pollutants in indoor smoke inflame the airways and lungs, impairing immune response and reducing the oxygen-carrying capacity of the blood.
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