Tobacco contains nicotine, which is addictive.

烟草含有尼古丁，它可致人成瘾。

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会使大黄蜂望而却步。

That worries the department because of the addictive nature of nicotine.

这令卫生部感到不安，因为尼古丁是一种能让人上瘾的物质。

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有关。

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

相反, 电子烟释放尼古丁蒸汽，让人自己在吸烟。

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年前高。

3 Days – After 3 days, the nicotine levels in a person's body are depleted.

3天——3天后，人体内的尼古丁水就会耗尽。

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。

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。

Nicotine is an addictive element in tobacco.

尼古丁是烟草中一种令人上瘾的成分。

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可卡因一样高。

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

尼古丁可缩小血管宽度，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，参加受试的人需要对酒精和尼古丁依赖性进行问卷调查。

And they even learned a flower's color faster, if that flower offered a nicotine fix.

如果花朵持续提供尼古丁，那大黄蜂甚至可以更快地识别花朵颜色。

And if caffeine and nicotine have these effects on bees?

是否只有咖啡因和尼古丁会对蜜蜂产生这些影响？

They contain carcinogens like nicotine and other toxins like arsenic.

它含有尼古丁等致癌物和砷等毒素。