n.(名词)

1. 尼古丁
2. 【化】烟碱
3. 烟草素

n.(名词)

1. [U]尼古丁，烟碱 a poisonous chemical which provides the taste and effect of tobacco

Noun:

1. an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide

1.尼古丁;烟碱
nicotine is the substance in tobacco that people can become addicted to.

nicotine的近义词

e.g. nicotine produces a feeling of well-being in the smoker...
尼古丁给吸烟者带来一种愉悦的感觉。
e.g. nicotine marks stained his chin and fingers.
尼古丁渍染黄了他的下巴和手指。

1. 烟碱：从烟叶中提取烟碱 烟碱 (nicotine)又名尼古丁,是烟草生物碱 (nicotiana alkaloids)(包括12种以上单一成分)的主要成分,于1928年首次被分离出来. 烟碱具有二个含氮环:吡啶环和吡咯烷环,天然产烟碱为左旋体. 烟碱在商业上用作

2.

2. 尼古丁：目的 尼古丁(nicotine)是烟草中的主要生物碱,是香烟中的对人体有害的主要生物活性物质. 已经公认,宫内暴露尼古丁会对胎儿大脑产生损害,改变突触功能,进而引起行为异常,这种损害会延续至成年. 但是,

3.

3. 菸碱(尼古丁)：世界卫生组织(WTO )研究指出,烟碱尼古丁(nicotine)实际上是一种兴奋剂,是强成瘾药物,吸烟的成产瘾机理与吸毒完全一样,只是程序略轻而已. 台湾天然植物精萃研发中心程先生研究发现:常绿亚乔木果实(山楂、乌梅、菠萝、柠檬等)经高倍浓缩,

1. Many smokers who are chemically addicted to nicotine cannot cut down easily.
   许多有尼古丁瘾的抽烟人不容易把烟戒掉。

Smokers who inhale are likely to become addicted to nicotine.

吸烟的人容易对尼古丁上瘾。

When people smoke, the nicotine goes right into the blood stream.

当人们抽烟时，尼古丁就直接进入血液之中。

nicotine produces a feeling of well-being in the smoker...

尼古丁给吸烟者带来一种愉悦的感觉。

nicotine marks stained his chin and fingers.

尼古丁渍染黄了他的下巴和手指。

If any plants are infested, they can be dipped in a 0.2 % nicotine solution.

倘若某些植物受侵扰, 可将它们侵入0.2%尼古丁溶液中.

nicotine can get people into the habit of smoking.

尼古丁使人对吸烟上瘾.

Pregnant women who smoke can pass nicotine and carbon monoxide to their baby through the placenta.

抽烟的怀孕女性会通过胎盘把尼古丁和一氧化碳传给胎儿.

Smokers who inhale are likely to become addicted to nicotine.

吸烟的人容易对尼古丁上瘾.

For instance, one item might be: " nicotine is an addictive drug. "

例如, 一个项目可能是: “ 烟草是一种上瘾的药物. ”

Laboratory tests showed that nicotine attracts neutrophil cells.

实验室试验表明,尼古丁能吸引中性白细胞.

Numerous constituents are toxins such as ammonia, benzene, and nicotine.

其中许多都是有害物质,如氨, 苯和尼古丁.

nicotine is a colorless, poisonous alkaloid.

尼古丁是无色有毒生物碱.

By measuring the nicotine content among the tabacco leaf in the different areas.

通过对不同地区烟叶中烟碱含量测定发现,烟碱含量相差甚远.

nicotine is a hygroscopic, oily liquid miscible with water in its base form. As water soluble.

尼古丁是吸水, 吸湿的油性液体, 在水,在油,或在其它溶剂,极易混合,并非溶解.

They have said that smokers are hooked on their own kind of drug, nicotine.

他们说,吸烟者给他们自己的那种毒品即尼古丁勾上了.

These are tobacco plants, the only natural source of nicotine.

这些是烟叶, 提炼尼古丁的惟一自然资源.

Many smokers who are chemically addicted to nicotine cannot cut down easily.

许多有尼古丁瘾的抽烟人不容易把烟戒掉.

For instance , one item might be: " nicotine an addictive drug . "

这也许是在吃早餐的时候,上午,或 饭后.

Far from acting as a relaxant aid for mood control, nicotine dependency an aid for stress.

香烟可不能充当缓和剂,也无助于人控制情绪, 相反,对尼古丁的依赖性却能增加人的压力.

But President Clinton declared nicotine an addictive drug last August.

然而,去年8月,克林顿总统宣布尼古丁为使人上瘾的麻醉药物.

It is known that tobacco contains nicotine and other harmful products to health.

大家都知道烟草含有尼古丁和其它对身体有害的物质.

His teeth were stained with nicotine from years of smoking.

他的牙齿因多年抽烟而被尼古丁染黄了.

A nicotine spray can help smokers quit the habit without putting on weight.

尼古丁喷雾剂能够帮助吸烟者在不增加体重的同时戒烟。

nicotine marks stained his chin and fingers.

尼古丁渍染黄了他的下巴和手指。

The amount of nicotine in these nicotine substitutes can be enough to excite the heart.

这些尼古丁替代品中的烟碱含量足以刺激心脏。

You are given pills with small quantities of nicotine to wean you from cigarettes.

会给你一些含少量尼古丁的药片帮你戒除烟瘾。

nicotine is a psychoactive drug.

尼古丁是一种影响精神活动的毒物。

Both nicotine and carbon monoxide inhaled with cigarette smoking have been incriminated as causative factors.

抽烟时吸入的尼古丁和一氧化碳都已经被标定为致病因素。

After about three months, I was no longer addicted to nicotine.

大约3个月后，我就不再对尼古丁上瘾了。

It allows nicotine to diffuse slowly and steadily into the bloodstream.

它能使尼古丁平稳缓慢地渗透到血液里。