Tobacco contains nicotine, which is addictive.

烟草含有尼古丁，它致人成瘾。

But they can take in higher levels of nicotine, which is addictive.

但吸入的尼古丁会更多，而尼古丁是会让人上瘾的。

Tobacco contains an alkaloid called nicotine.

烟草含有一种叫做尼古丁的生物碱。

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

尼古丁过胎盘进入胎儿体内。

In particular, nicotine is a highly flexible molecule.

尼古丁是一种尤高活性的分。

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

这能为烟草等含有尼古丁的植物带来优势。

Look, there are other ways to quit. You can try the nicotine patch, or nicotine chewing gum.

看，还有方法能戒烟的。你试试尼古丁贴片或尼古丁口香糖。

Some get help from electronic cigarettes, medicine or nicotine patches that reduce one's desire for the drug.

一些人从电香烟、药物或能减少对尼古丁渴望的尼古丁贴片来寻求帮助。

Nicotine is an addictive element in tobacco.

尼古丁是烟草中一种令人上瘾的成分。

Nicotine affects the hippocampus as well.

尼古丁也会损害海马体。

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。

Nobody's going like, oh, I'll just have this that tastes like nicotine.

没有人会喜欢去抽尼古丁味的烟。

They contain carcinogens like nicotine and other toxins like arsenic.

它们含有尼古丁等致癌物和砷等毒素。

Headaches and seizures are also common signs of nicotine poisoning.

头痛和癫痫也是尼古丁中毒的常见病症。

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。

E-cigarettes create a vapor out of nicotine and other chemicals.

电烟由尼古丁和化学品制造出烟雾。

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。

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。

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。

Nicotine is a toxin that stimulates your body to produce adrenaline.

尼古丁是一种毒素，刺激你的身体产生肾上腺素。