Less encouraging for health is the prospect that some smokers might switch to the new products rather than give up tobacco completely.

就健康而言不太乐观的前景是，一些吸烟者可能会转向使用新产品而不是完全放弃烟草。

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Mutual proportions of chemical ingredients in tobacco leaves are in harmony fundamentally, but a few is less harmonious or unharmonious.

各化学成分间相互比例基本协调，少数烟叶化学成分比例不够协调甚至失衡。

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The results of MTT experiment showed that:the cell survival rate of adding the tobacco essence and flavor is less than no additive is added in the tobacco;

MTT实验结果表明：添加香精香料卷烟的细胞存活率＜不添加香精香料卷烟；

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The legislation also contains language preventing tobacco companies from saying that smokeless tobacco is less hazardous than cigarettes.

FORBES: Magazine Article

The charity urged the government to commit to plain, standardised packaging of tobacco, which is considered less appealing to youngsters.

BBC: Cigarette pack plan 'won't increase smuggling'

The reason is simple: Altria is into tobacco, but Americans are smoking less.

FORBES: Market Scan