n.(名词)

1. 【化】咖啡因
2. 咖啡碱
3. 三甲黄嘌呤
4. 茶精（兴奋剂）

Noun:

1. a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects

1.咖啡因;咖啡碱
caffeine is a chemical substance found in coffee, tea, and cocoa, which affects your brain and body and makes you more active.

1. 咖啡碱：主要成份: 咖啡碱 (caffeine) 加速血液循环,把eye cream 成份更容易带进眼部肌肤 透明质酸 (Hyaluronic acid) 透明质酸是皮肤的天然保湿因子,不仅保持皮肤弹性功能,锁住大量水份子,同时对皮肤、关节组织具有保湿润滑作用.

2. 咖啡：[化学成份] 茶叶含膘呤类生物碱,以咖啡(caffeine)为主,含量1%-5%,另有可可豆碱(theobromine),茶碱(theophylline),黄瞟呤(xanthine). 还含鞣质,绿茶中含缩合鞣质约10%-24 %,红茶中约6%左右,其中没食子酸以左旋表没食子儿茶精酯[(-)epigallocatechin gallate]为主,

3. 咖啡因--咖啡因：咖啡碱就是咖啡因咖啡因(caffeine)又可称为咖啡碱(theine)或甲基可可碱(methyltheobromine),其化学式为C8H10N4O2,主要的成分为黄碱(黄嘌呤)(xanthine,(CH3)3C5HN4O2),是一种存在于自然界中的天然物质.

Now there are cola drinks without caffeine.

现在也有不含咖啡因的可乐类饮料。

I'm trying to cut down on sugar and caffeine.

我决定减少对糖和咖啡因的摄取量。

caffeine makes people nervous and unsleeping.

咖啡因是人们紧张和难以入睡。

Stay away from caffeine in the afternoon and evening.

在下午和晚上避免接触咖啡因.

The assay of theobromine and caffeine mother solution of theobromine is determined by HPLC.

控制提取工艺需要测定柯柯豆碱母液中柯柯豆碱、咖啡因的含量.

In fact, I never knew how much caffeine I had drunk.

其实我以前根本都不知道喝了多少.

Downing caffeine can be easier, quicker, and socially more eptable in many ways.

喝杯咖啡可能更容易 、 更快 、 而且在很多方面更容易让社会接受.

Avoid alcohol and caffeine, which can contribute to depression and anxiety.

避免饮酒和食用咖啡因, 它们可导致抑郁和焦虑.

In addition, no caffeine, not affect sleep. Bubbles may 10 times more.

此外, 本产品不含咖啡因, 不影响睡眠. 每袋可沏泡10次以上.

caffeine and other stimulants cannot overcome the effects of severe sleep deprivation.

咖啡因和其它兴奋剂不能克服严重睡眠剥夺的影响.

caffeine makes people nervous and unsleeping.

咖啡因是人们紧张和难以入睡.

Avoid caffeine or alcohol; memorise your shopping list.

避免饮用咖啡因或酒精饮料; 回忆你的购物清单.

They afield appeal mainly to young people andare fueled mainly by caffeine.

它们主要针对青年人,依靠咖啡因来让人提神.

Researchers found that caffeine did indeed heighten the pressure felt.

研究者发现咖啡因确实会增强压迫感.

Research by Australian scientists has found that many teenagers are affected by caffeine.

澳大利亚科学家的研究表明,咖啡因对许多孩子造成了影响.

caffeine can inhibit lung pant for parasympathetic nerve, reduce asthma attacks.

定肺喘咖啡因会抑制副交感神经, 减少气喘病的发作.

Shaw's lab previously showed that they can use caffeine and methamphetamine to keep flies awake.

肖博士之前的研究表明咖啡因和脱氧麻黄碱可用于维持果蝇的清醒状态.

The product has 50 per cent less caffeine than regular Nescafe instant coffee.

这种产品的咖啡因含量比普通的雀巢速溶咖啡少一半.

It was awful but for what it cost I drank it anyway to get the caffeine.

这是可怕的,但它的成本i喝它无论如何得到咖啡因.

caffeine is a stimulant which acts on the nervous system.

咖啡因是一种对神经系统产生影响的兴奋剂.

It also means maintaining a approach to things like alcohol and caffeine.

这也意味着对于像酒精和咖啡因的东西要适可而止.

Using 1 % calcium oxide has more single caffeine production rate, extraction rate and purity.

1%氧化钙水溶液单纯提取咖啡因的得率 、 提取率和纯度较高.

caffeine restriction and aerobic exercise often reduce symptoms.

限制咖啡和增氧健身运动可以减轻症状.

Avoiding caffeine also may help reduce anxiety.

远离咖啡因也能降低焦虑.

Which foods and beverages contain caffeine?

哪些食物、饮料中含有咖啡因?

The caffeine in coffee can jangle the nerves.

咖啡中的咖啡因会使神经紧张。

As a rule of thumb, a cup of filter coffee contains about 80mg of caffeine.

凭经验估计，一杯过滤咖啡约含80毫克咖啡因。

As little as 50mg of caffeine can produce pharmacological effects.

仅仅50毫克的咖啡因就能产生药理效果。

The shaking inside may be due to low blood sugar, too much caffeine or too many cigarettes.

心悸可能是由于低血糖、咖啡因过量或抽烟过多。

caffeine can cause palpitations and headaches.

咖啡因会引起心悸和头痛。