暴露在香烟烟雾下促进了肿瘤的生长，而硒无法阻止肺癌和肝癌的发生。

Exposure to smoke boosted the growth of tumors and selenium could not stop the growth of lung can liver cancers.

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暴露在香烟烟雾中的行为会与所有药物的危害性明显相关，甚至是处于医疗目的（比如母亲患有严重心理疾病），也会和单一或多种药物使用的危害性明显相关。

The exposure was significantly associated with the risk for all medication use and for both single- and multiple-drug consumption even after adjustment (e.g.

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它显示在这禁令颁布前员工每周要暴露在香烟的烟雾中40小时，而在禁令颁布后，每周仅为25分钟，暴露时间降低99%。

It revealed staff were exposed to tobacco smoke for 40 hours per week before the ban, compared to 25 minutes per week post ban, a 99% drop in exposure.

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