It is a well-known fact that caffeine is a stimulant.
咖啡因是兴奋剂，这是人所共知的事实。
Theophylline, a close structural relative of caffeine and the major stimulant in tea, was one of the most effective compounds in both regards.
茶碱是咖啡因的近亲，也是茶中的主要兴奋剂，它在这两方面都是最有效的化合物之一。
Caffeine, the stimulant in coffee, has been called "the most widely used psychoactive substance on Earth".
咖啡中的咖啡因因被称为“地球上使用最广泛的精神活性物质”。
Nicotine is both a stimulant and a depressant.
尼古丁既是一种兴奋剂也是一种镇定剂。
It is psychoactive, a stimulant and addictive.
它作用于人的神经系统，是一种兴奋剂，让人上瘾。
称赞是一种激励。
Also, the nicotine in cigarettes is a stimulant.
此外，香烟中的尼古丁也有刺激性。
I only know a stimulant, a salty stimulant, it's called sweat.
我只知道一种兴奋剂，一种咸味的兴奋剂，它叫汗水。
Mixed together, the stimulant and the depressant do not cancel each other out.
将两者混合，它们所具有的兴奋剂和镇静剂的效用并不会彼此抵消。
As a stimulant it will keep you awake, even if used nearly six hours before bed.
作为兴奋剂它会让你保持清醒，即使差不多是在睡觉前6个小时。
It was their delight, their folly, their anodyne, their intellectual stimulant.
这是他们的人生乐趣，他们的一时荒唐，他们的止痛药，他们的脑力刺激剂。
ADHD is often partly treated with a stimulant (Ritalin), along with behaviour therapy.
注意力不足过动症常常用兴奋剂(利他林)来治疗，同时伴以行为疗法。
There are some concerns that stimulant medications can be abused by people who don't need them.
有些人担心不需要兴奋剂药物治疗的人可能会滥用药物。
In a sample of middle- and high school students, the illicit useof stimulant medication was 4.5 percent.
中学生和高中生样本中非法服用兴奋剂的比例是百分之四点五。
Their principal active component is capsaicin, which is a powerful stimulant of afferent nerve fibres.
他们主要活性成分是辣椒素，是一种传入神经纤维强效刺激物。
You are a stimulant for me to become more fully what I might become, and my loving enhances your being as well.
你将是激励我更加充实自己的动力，我的爱也会使你不断完善提高。
Another advantage is that Internet transaction encourages consumption, which is a stimulant for economic growth.
另一个好处是网上交易促进消费，这对于经济增长也是一种刺激。
Theirs is the gift of a broad mind, constantly fed with the stimulant of being interested in what everyone else is doing.
他们涉猎很广，此外别人在做的事情也能不断地激起他们的兴趣。
Theirs is the gift of a broad mind, constantly fed with the stimulant of being interested in what everyone else is doing.
他们的天赋就是思维活跃，总是对其他人在做的事情充满好奇和兴趣。
A mixture similar to the protein content of egg whites activated these cells, triggering the release of the stimulant orexin.
一种与蛋清中所含的蛋白质相类似的混合物质激活了这些脑细胞，引发了使人兴奋的促食素大量释放。
They found that sugar ACTS as a stimulant that switches on normal bacterial responses, rendering the bugs vulnerable to antibiotic attack.
他们发现糖就像兴奋剂一样，让细菌的正常反应得以恢复，从而使它们对抗生素的攻击更为敏感。
Green, brown, and red are the most popular food colors. Red is often used in restaurant decorating schemes because it is an appetite stimulant.
绿色，棕色和红色是最流行的食物色。红色能够刺激人的胃口，所以通常作为餐馆中的装饰色。
The ventral tegmental area is a clump of cells that make dopamine, a natural stimulant, and sends it out to many brain regions [when one is in love].
当人恋爱时，腹侧盖膜区的细胞会产生天然兴奋剂多巴胺，并把它传输到多个脑区。
For centuries, people who live in the high Andes have chewed coca leaves, whose alkaloids act as a mild stimulant and help to ward off cold and hunger.
几百年来，居住在安地斯高山上的居民喜爱嚼食古柯叶，其中的生物碱成分是一种温和的兴奋剂，有助于抵抗寒冷和饥饿。
As a stimulant, caffeine jazzes up your whole body, increasing blood pressure, heart rate and in some cases, causing heart palpitations and an irregular heartbeat.
做为一种兴奋剂，咖啡因让你全身活跃，血压和心跳升高，在某些例子中导致心悸和心率不齐。
Andean peoples have chewed coca leaves for centuries to induce a mild stimulant effect, and they also use the plants to make products such as tea and baking flour.
几个世纪以来，居住于安第斯山脉的人有着咀嚼古柯叶提神的传统，他们也用古柯叶做茶叶或烘焙面粉。
Don't drink beverages with caffeine, such as coke and coffee, after 4 P. M. Nicotine in cigarettes is a stimulant, so quitting smoking could help you sleep better.
不要在下午四点以后喝带有咖啡因的饮料，如可乐和咖啡。香烟中的尼古丁是一种刺激物，因此戒烟可以让你睡得更好。
On the same day the study was published, the FDA issued a public announcement urging parents not to stop a child's stimulant medication on the basis of this study alone.
在研究发表的当天，FDA发表一份公开声明，敦促家长不要仅基于这份研究就停止儿童的兴奋剂用药。
Chinese Olympic officials have advised national athletes not to take traditional remedies because some contain banned substances such as herbal ephedrine, a stimulant.
中国奥运官员已建议中国运动员不要服用传统中药，因为某些中药含有违禁的兴奋剂类物质，如麻黄。
Chinese Olympic officials have advised national athletes not to take traditional remedies because some contain banned substances such as herbal ephedrine, a stimulant.
中国奥运官员已建议中国运动员不要服用传统中药，因为某些中药含有违禁的兴奋剂类物质，如麻黄。
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