His addiction to nicotine trumped convention and courtesy.

他的烟瘾胜过了公德和礼貌。

Unnaturally high nicotine concentrations deterred the bees.

尼古丁浓度高于自然水平会使大黄蜂望而却步。

Tobacco contains nicotine, which is addictive.

烟草含有尼古丁，它成瘾。

Under the law in Massachusetts, tobacco companies have to measure the nicotine content of every type of cigarette and report the results.

马萨诸塞州法律规定，烟草公司必须测量并公布其各类香烟中的尼古丁含量。

Professor Terrence said nicotine is connected to high protease levels in the lungs.

特伦斯教授说，尼古丁与肺部的高蛋白酶水平有关。

Instead, they release a nicotine vapour that makes people feel like they are smoking.

相反, 子烟释放尼古丁蒸汽，让们觉得自己在吸烟。

92 were found to have higher nicotine yields than they did 6 years previously.

发现92种烟草的尼古丁含量比6年高。

That deficit is leveled up by toxic gases like carbon monoxide and nicotine.

这种缺陷会被一氧化碳和尼古丁等有毒气体加剧。

Remember, many of these kids have never smoked before and are suddenly being exposed to the same nicotine levels as a full pack of cigarettes without any build up of tolerance.

记住，这些孩子中的许多从来没有吸过烟，他们突然暴露在与一整包香烟相同的尼古丁水平下，而没有任何耐受性。

Health officials are worried that vaping can get kids hooked on nicotine early in life and lead them to try smoking and other drugs.

卫生官员担心，吸烟会让孩子早年对尼古丁上瘾，并导他们尝试吸烟和其他毒品。

This is likely to annoy many smokers who have been moving to electronic cigarettes in an attempt to cut down on nicotine or even quit smoking.

这能令很多想通过换抽子烟减少尼古丁摄入量甚至戒烟的烟客感到失望。

It also decreases the amount of nicotine permitted in smoked tobacco products.

它还会减少烟草制品中允许的尼古丁含量。

Health experts say nicotine is highly harmful to developing brains.

健康专家表示，尼古丁对发育中的大脑极具危害。

That's an alkaloid—so it's in the same class of molecules as caffeine and nicotine.

那是一种生物碱——与咖啡因和尼古丁属于同一类分子。

In particular, nicotine is a highly flexible molecule.

尼古丁是一种尤其高活性的分子。

This dopamine increase from cold immersion is just as high as nicotine or cocaine.

泡冷水带来的多巴胺增加与尼古丁或卡因一样高。

Nicotine narrows your blood vessels and puts added strain on your heart.

尼古丁缩小血管宽度，增加心脏负荷。

At the beginning of the study, the participants answered questions about alcohol and nicotine dependence.

在研究开始阶段，参加受试的需要对酒精和尼古丁依赖性进行问卷调查。

And we saw earlier that nicotine and carbon monoxide make the heart work much harder.

我们之看到尼古丁和一氧化碳使心脏工作负荷工作。

These substances contain chemicals similar to nicotine and affect insect nervous systems.

这些农药中含有类似尼古丁的物质，这种物质会影响蜜蜂的神经系统。