Tobacco contains nicotine, which is addictive.

烟草含有尼古，它可致人成瘾。

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

这令卫生部感到安，因为尼古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, 电子烟释放尼古蒸汽，让人觉得自己在吸烟。

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

发现92种烟草的尼古含量比6年前高。

Which might give nicotine-pushing plants, like tobacco, an edge.

这可能为烟草等含有尼古的植物带来优势。

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

3天——3天后，人体内的尼古水平就会耗尽。

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

这种缺陷会被氧化碳和尼古等有毒气体加剧。

A ban? In other words, they don't want them to be permitted indoors anymore?

禁令？也就说他许任何人在室内抽烟？我知道电子烟的工作原理加热液态的尼古。

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

它还会减少烟草制品中许的尼古含量。

Nicotine is an addictive element in tobacco.

尼古烟草中种令人上瘾的成分。

This drug can pass through the placenta to an unborn baby.

尼古可以通过胎盘进入胎儿体内。

Health experts say nicotine is highly harmful to developing brains.

健康专家表示，尼古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.

那种生物碱——与咖啡因和尼古属于同类分子。

In particular, nicotine is a highly flexible molecule.

尼古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或可卡因样高。

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

尼古可缩小血管宽度，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依赖性进行问卷调查。

But at real-world levels, the drug attracted bees.

但当浓度保持在自然水平时，尼古就会吸引来大黄蜂。

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，那大黄蜂甚至可以更快地识别花朵颜色。