研究的另一个缺陷在于，研究所针对的烟草品牌并没有严格按照市场份额来挑选，或者说这些挑选的烟草品牌不足以代表不同的焦油含量。相反，这些烟草品牌全是简易样本。
Another limitation is that brands for this study were not selected strictly on the basis of market share or to represent a broad range of tar yields, but rather were a convenience sample.
正如英美烟草公司所指出，人们吸低焦油含量香烟的感觉不同于高焦油含量香烟，这在过去和现在都不是什么秘密。
It was and is no secret, as BAT points out, that people smoke low-tar cigarettes differently from high-tar ones.
即使吸食低焦油的烟草也同样会提高患病风险。
他们起诉烟草制造商隐瞒了关于清淡型和低焦油型香烟和其他的香烟一样危险的信息。
They accused cigarette makers of hiding information that "light" or "low tar" cigarettes are just as dangerous as other cigarettes.
另外一些吸烟者认为低焦油的的烟草更安全，焦油是烟叶燃烧时产生的一种物质，它以易引发癌症而著称。
Other smokers believe that cigarettes with low tar levels are safer. Tar is a substance produced when tobacco leaves are burned. It is known to cause cancer.
深呼吸时，烟草里的一氧化碳和焦油能够引发肺病和心脏病。
While inhaling deeply, you also get more of the carbon monoxide and tars that cause lung and heart disease.
烟草公司在市面上的销售的香烟一直标榜着低尼古丁和低焦油含量。
The companies already make cigarettes marketed as low tar and low nicotine.
烟草中最主要的致癌物质是煤焦油，它含有大量致癌作用很强的34苯并a芘。
The most important carcinogens in tobacco is tar, which contains large amounts of carcinogenic effects of a strong 34 Benzo a Pyrene.
糖与烟草一起燃烧后增加了焦油量，而糖燃烧后的产物是烟中的一个重要致癌物。
Candy burns the amounts having increased tar the day after tomorrow together with tobacco , that candy burns queen's outcome is a important cancerogen in cigarette but.
卷烟和烟草制品（包装和标签）法强制要求所有的烟草制造商，要给出其产品的尼古丁和焦油含量。
The Cigarettes and other Tobacco Products (Packaging and Labelling) Act makes it mandatory for all tobacco manufacturers to mention the percentage of nicotine and tar in their products.
卷烟和烟草制品（包装和标签）法强制要求所有的烟草制造商，要给出其产品的尼古丁和焦油含量。
The Cigarettes and other Tobacco Products (Packaging and Labelling) Act makes it mandatory for all tobacco manufacturers to mention the percentage of nicotine and tar in their products.
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