多巴胺被认为是“快乐激素”，产生喜悦感；去甲肾上腺素类似于肾上腺素，导致心跳加速和兴奋感，据来自美国罗格斯大学的人类学家，著名的爱情研究者Helen Fisher所说，这两种化学物质共同引起喜悦感，充沛的精力，失眠，强烈的愿望，食欲的减退和集中的注意力。
Dopamine is thought to be the "pleasure chemical, " producing a feeling of bliss. Norepinephrine is similar to adrenaline and produces the racing heart and excitement.
不同于界限模糊的绿色，红色无疑象征着活力和兴奋，红色使血压上升，心跳加速。
There's no equivocation with red. It has energy and excitement, actually raising the blood pressure and making the heart beat faster.
当一段新的恋情开始时，你总会感觉到肾上腺素的飙升，此时你心跳加速，头晕目眩，你变得清醒，机敏和兴奋。
Young relationships start out with an adrenaline rush. Your heart RACES, you get giddy, you're alert, awake and excited.
我也同意它太重了，价格也太贵，加速性也不能让飙车迷兴奋起来。不过它在几个方面还是值得表扬的。
While I agree that it is overweight, overpriced, and won't excite any hot-shoe drivers, the CrossCabrio is praiseworthy in several respects.
这一最新报告认为，互联网是加速全球化进程的兴奋剂。
According to the new report, the Internet is globalization on steroids.
这个季节的确会加速血液循环、提高人们感官的兴奋程度。
The season does induce a quickening of the blood and a heightening of human kind's sensual pleasures.
应激时HPA轴兴奋可产生明显的中枢效应，如抑郁、焦虑、厌食及攻击性增加等情绪行为改变，加速溃疡的形成。
Excitement of the HPA axis can affect the centrum, such as blues, angst, anorexia, pugnacity et al, these symptom accelerate gastric ulcer.
水煮鱼浓重的麻辣口味，大大刺激了人的味觉神经，唾液、胃液分泌增多，胃肠蠕动加速，使人兴奋。
Boiled fish thick spicy taste, has stimulated people taste nerve, saliva, gastric juice secretion increased, gastrointestinal peristalsis acceleration, make a person excited.
这个季节的确会加速血液循环、提高人们感官的兴奋程度。
The season does induce a quickening of the blood and a heightening of humankind 's sensual pleasures.
生活在艳丽的阳光下，会让我们很兴奋，以致于没注意到，我们的信心可能正在加速的消失；
Life in the sunshine is so exhilarating that we seldom notice our faith beginning to droop.
兴奋剂主要起到加速或激活中枢神经系统的作用，而镇静剂则相反：减缓它的活动。
Stimulants initially speed up or activate the central nervous system, whereas depressants slow it down.
我们对印度足球的将来有一个大胆的展望，而这项令人兴奋的方案将可以加速我们在国际上的进步。
"We have a bold vision for the future of football in India and this exciting scheme will only help to accelerate our progress on the world stage" said Mr.
我们对印度足球的将来有一个大胆的展望，而这项令人兴奋的方案将可以加速我们在国际上的进步。
"We have a bold vision for the future of football in India and this exciting scheme will only help to accelerate our progress on the world stage" said Mr.
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