nicotine
US /ˈnɪkəˌtin/
・UK /ˈnɪkəti:n/
C1 高級
n. (u.)不可數名詞菸鹼；尼古丁
Nicotine marks stained his chin and fingers
影片字幕
為什麼抽菸會顯老、雪是白色的？替你解惑四個你一定好奇過的小知識！(Why Smoking makes People look Old?)
04:45
- Smoking makes people look old because things like cigarettes contain nicotine.
因為香菸中含有尼古丁, 因此抽菸會讓人看起來比較老。
- Nicotine is a vasoconstrictor, which means it narrows our blood vessels, restricting the blood supply.
尼古丁是一種血管收縮劑, 這表示它會使我們的血管變窄, 因而限制血液的供應。
雖然負面作用一大堆，但是吸菸...感覺真棒?! (Smoking is Awesome)
11:45
- Once your brain is used to nicotine, for up to 72 hours you are itchy, nervous and stressed, but one drag and instantly, you feel really good.
一旦你的大腦習慣了尼古丁，在長達 72 小時的時間裡，你會感到搔癢、緊張和壓力，但只要一吸，立刻就會感覺非常好。
- A cigarette is dried tobacco leaves mixed with chemicals that make it burn slowly, helping you to absorb nicotine, and flavours that make the smoke less harsh.
香菸是乾燥的菸葉與化學物質混合而成的，這些化學物質可以使其緩慢燃燒，幫助你吸收尼古丁，並添加使煙霧不那麼刺鼻的香料。
抽電子煙比抽菸更傷身嗎？ (Is Vaping Worse Than Smoking?)
05:46
- To start, the nicotine in vapes hits your bloodstream and brain faster than cigarettes.
首先，電子煙中的尼古丁比香菸更快進入您的血液和大腦。
- Mixed with an active ingredient, most commonly nicotine and chemical flavorings,
與活性成分（最常見的是尼古丁和化學調味料）混合，
從生活中改善這五件事，讓你晚上睡覺不再輾轉難眠！ (5 Life Hacks To Get A Good Night Sleep)
05:18
- And my last tip about moderating your diet is to avoid nicotine and caffeine as the stimulating effects of nicotine and caffeine take hours to wear off and can mess up your quality of sleep dramatically.
最後一個技巧，是要適量的飲食，避免尼可丁以及咖啡因因為刺激性的尼可丁和咖啡因會持續幾個小時才會退去，同時也會嚴重搗亂你的睡眠品質。
- as the stimulating effects of nicotine and caffeine take hours to wear off and can mess up your quality of sleep dramatically.
因為刺激性的尼可丁和咖啡因會持續幾個小時才會退去，同時也會嚴重搗亂你的睡眠品質
蜜蜂之死的解釋--寄生蟲、毒物和人類。 (The Death Of Bees Explained – Parasites, Poison and Humans)
06:20
- Neonicotinoids, a chemical family similar to nicotine,
新菸鹼類(Neonicotinoids)，這個化學類相似於尼古丁(nicotine)
什麼？這些科學常識竟然都不是真的！？Popular Facts That Are Actually Bulls*!#@
01:42
- Hey, nicotine causes cancer
嘿 尼古丁會致癌
- Nicotine is what makes it addictive
尼古丁只是會使人吸菸成癮
常不明原因感到焦慮嗎？專家教你快速評估、對症下藥！ (Why am I Anxious? A Quick Assessment)
09:19
- Do you use drugs, alcohol, or nicotine?
你吸毒、酗酒或吸尼古丁嗎？
早起的鳥兒未必有蟲吃！？(Early Birds vs Night Owls)
03:11
- Not to mention early birds tend to display more positive social traits such as being proactive and optimistic, and are less prone to depression, or addictions to nicotine, alcohol and food.
更不用說早起的人往往顯出更正面的社交特徵，例如是積極主動和樂觀，而且較不易抑鬱或對尼古丁、酒精和食物上癮。
哪個比較傷身？傳統香菸和電子菸的比較 (Smoking vs Vaping)
04:20
- In cigarettes, this releases nicotine which is absorbed into your bloodstream through the lungs, causing increased heart rate, constricted blood vessels, release of dopamine in the brain and feelings of alertness.
在香菸中，這些被釋放的尼古丁會被你的肺吸收到血液中，因而提高心臟病發生機率、造成血管收縮、多巴胺在腦中的釋放、官能放大。
- But because nicotine is a stimulant, once it’s no longer present, you crash and crave more, which ultimately leads to addiction in many people.
但是因為尼古丁是一個刺激物，所以一但沒有它的時候，你會渴望擁有更多，最後會讓許多人上癮。
電子煙錯了嗎? (What's Wrong with E-Cigarettes?)
05:25
- Instead, a liquid containing nicotine derived
from tobacco leaves is vaporized,
相反，含有尼古丁的液體衍生 從菸葉中蒸發出來的。
- E-cigarettes do contain nicotine, an addictive
drug.
電子煙確實含有尼古丁，這是一種讓人上癮的物質。 藥物。