确认减轻氡对健康影响的有效战略。
Identify effective strategies for reducing the health impact of radon.
估计接触住宅中氡的全球健康影响。
Estimate the global health impact of exposure to residential radon.
避免氡从地下室进入生活用房。
Avoiding the passage of radon from the basement into living rooms.
可通过以下方法降低家中的氡水平
氡有放射性，是有害物质。
氡引起的多数肺癌病例发生在吸烟者中。
Most of the radon-induced lung cancer cases occur among smokers.
在全球，氡每年可造成数万例肺癌死亡。
On a global level, tens of thousands of lung cancer deaths annually can be attributed to radon.
在地下室安装氡蓄贮系统。
室外的氡水平通常很低。
甚至在氡的案例中，只有可得的行动指导。
[8] Even in the case of radon, only guidelines for action are available.
另外两种空气污染需要某种提示：氡和石棉。
Two other air pollutants require some mention: radon and asbestos.
可供氡进入家中的途径
鉴于在空气中的稀释，室外的氡水平通常很低。
Due to dilution in the air, outdoor radon levels are usually very low.
应采用建筑规范，在住宅建筑中减少氡的水平。
Building codes should be implemented to reduce radon levels in homes under construction.
氡也可在水中找到。
在许多国家中，氡是肺癌的第二种最重要病因。
Radon is the second most important cause of lung cancer in many countries.
氡来自镭的衰变。
中国、俄罗斯和美国的科学家测量地下水的氡含量。
Scientists in China, Russia, and the United States measure radon in ground water.
氡是一种放射性的自然气体，从地下散发到空气中。
Radon is a natural radioactive gas that emanates from the ground into the air.
氡更容易使吸烟者患肺癌。
Radon is much more likely to cause lung cancer in people who smoke.
当吸入之后，来自氡的放射暴露可导致人们罹患肺癌。
When inhaled, the radiation exposure from radon may lead to lung cancer.
在接触高水平氡的铀矿工人中观察到显著的健康影响。
Significant health effects have been seen in uranium miners who are exposed to high levels of radon.
当增加氡换气扇时，可进一步降低氡的水平。
When radon ventilation fans are added radon levels can even be reduced further.
氡是什么？
氡和石棉。
氡引起肺癌的比率估计范围为3 - 14%。
The proportion of lung cancers attributable to radon is estimated to range from 3 to 14%.
饮用水中也可找到氡，浓度取决于水源，有时可造成危害。
Radon can also be found in drinking water, the concentration depending on the water source, and this can sometimes present a hazard.
氡水平在地下室、地窖或与泥土接触的其它结构区通常较高。
Radon levels are usually higher in basements, cellars or other structural areas in contact with soil.
氡是一种天然产生的放射性惰性气体，它无色、无味、无臭。
Radon is a chemically inert, naturally occurring radioactive gas. It has no smell, colour or taste.
氡是一种天然产生的放射性惰性气体，它无色、无味、无臭。
Radon is a chemically inert, naturally occurring radioactive gas. It has no smell, colour or taste.
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