The researchers found a 24 percent increase in lung cancer risk among people exposed to passive smoke in the workplace.

研究人员发现，那些在工作场所接触被动吸烟的工人，其肺癌发病风险增加了24%。

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The many people all think passive smoke cigarette far smoke cigarette of disadvantage big, rightness nearby of the smoker tolerate too much.

很多人都认为被动吸烟远没有吸烟的害处大，对身边的吸烟者过于宽容。

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"I see a lot of people with heart attacks in their 40s and 50s, who have no risk factors at all except having exposure to passive smoke in childhood," Prof Celermajer says.

“我见过很多四五十岁的心脏病病例，他们除了在幼时曾暴露于二手烟雾，找不到其他导致心脏病的危险因素。”斯里马杰教授说。

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"The people that are at the highest level of passive smoke are actually the ones reporting exposure in their own homes.

VOA: standard.2010.06.15

Prior to the smoke-free law much of the debate on the legislation centred on protection of bar workers from passive smoke.

BBC: Childhood asthma 'admissions down' after smoking ban

As well as being at increased risk of a series of respiratory conditions, the lungs of children who breathe in passive smoke may also develop more slowly than children who grow up in smoke-free homes.

BBC: Passive smoking 'kills 600,000' worldwide

Michael Siegel, professor of community health sciences at Boston University, wrote in the New York Times that the ban was "pointless" from a public health perspective and could, in fact, increase the risk of passive smoking by creating "smoke-filled areas" near park entrances.

BBC: New York's outdoor smoking ban: Will the world follow?