Recent work also suggests that cadmium and lead levels are higher in lung tissues of current and former smoking lung cancer patients relative to non-smokers.30.

最近的研究同样表明因吸烟患上肺癌的病人肺组织的镉和铅水平高于不吸烟的人。

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Cigarette smoking is responsible for about 90% of deaths from lung cancer.

因患肺癌而死亡者，约90%是吸烟所致。

《牛津词典》

Cigarette smoking has been associated with lung cancer.

肺癌被认为与吸烟有关。

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The World Health Organization says at least five million tobacco users die every year from lung cancer, heart disease and other smoking-related causes.

VOA: standard.2010.02.18

Eventually, as scientific data established a clear correlation between smoking and lung cancer, the regulatory landscape shifted towards discouraging smoking.

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Further, Sir Richard Doll, who first brought our attention to the links between smoking and lung cancer said: "I do not mind people smoking in my presence, since the risk of harm is so minimal".

BBC: Non-smoker

The first clinical and epidemiological studies linking cigarette-smoking and lung cancer were published only in 1950.

ECONOMIST: Tobacco