PAHs are chemicals released into the air from the burning of coal, diesel, oil and gas, or other organic substances such as tobacco.

多环芳烃是由煤炭、柴油、石油和汽油的燃烧释放出来的，或者如烟草这样的有机物。

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The sampling methods and conditions, qualification and quantification of the volatile organic compounds in environmental tobacco smoke were reviewed.

对环境烟草烟气中的挥发性有机成分的采样方式、采样条件以及定性定量方法进行了综述。

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Applying organic manure especially rapeseed cake fertilizer has close relation with the composing of tobacco fragrance quality and fragrance quantity.

施用有机肥特别是菜籽饼肥与烟叶香气质和香气量的形成关系非常密切。

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Earlier this month, a Washington Post freelance reviewer alerted the paper to numerous similarities between material in "Seeds of Hope" and passages on Wikipedia and on websites for organic tea and the history of tobacco.

NPR: Goodall Book Postponed Because Of Lifted Passages