目的检测20种主要国产品牌香烟主流烟雾中多环芳烃与焦油含量，并分析其是否有相关关系。

Objective To analyze the content of polycyclic aromatic hydrocarbons (PAHs) in mainstream smoke of 20 brands of Chinese cigarette.

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柯隆利则说，在第二世界销售的香烟和香烟广告，不但没有健康警语，同时比在美国贩卖的同品牌香烟，含更多的焦油和尼古丁。

Connolly said cigarettes are sold and advertised in the Third World without health warnings and with higher tar and nicotine content than in the same brands sold in the U.S..

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云斯顿是一种香烟品牌。

Winston is a brand of cigarette.

《柯林斯英汉双解大词典》