Secondhand smoke from cigars contains the same toxic chemicals that secondhand cigarette smoke does.

来自雪茄的二手烟与来自香烟的二手烟一样含有同样的有毒化学物质。

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Cancer. Secondhand smoke is a known risk factor for lung cancer. Some research also suggests a link between secondhand smoke and various other types of cancer.

癌症。众所周知，二手烟是肺癌的致病因素之一，一些研究还表明二手烟与其他癌症也有着千丝万缕的关系。

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The risk of hospitalization was 2.8 times greater for secondhand smokers compared to people not exposed to secondhand smoke, while it was 3.7 times greater for smokers.

被动吸烟者收院治疗的风险是不处于二手烟环境中的不吸烟者的2.8倍，而吸烟者的风险则达到3.7倍甚至更高。

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C.D.C. official Janet Collins says breathing secondhand smoke has immediate harmful effects on a person's heart-and-lung system.

VOA: special.2009.01.07

But the Haight Street area, there's a lot of secondhand stores,

但在海特街，有很多二手店，

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Each year in the United States, secondhand smoke kills an estimated 46,000 nonsmokers from heart attacks.

VOA: special.2009.01.07

"If 40 percent of chronic rhinosinusitis is caused by secondhand smoke, you're in a good position to eliminate...those cases if you eliminate secondhand smoke, " he says.

CNN: Sinus trouble? Secondhand smoke may be to blame

My first tactic to deal with the secondhand market thus has to be to work on building a community of loyal fans who would not only never dream of buying secondhand, but who will also talk their friends into buying direct from me too.

FORBES: Amazon Eyes Secondhand Ebook Market

"Clothing is one of our more challenging practices, " says Jason Lawrence, 35, who mostly buys secondhand.

NPR: Shoppers Face Hurdles In Finding Ethical Clothing