There are some people, however, for whom regular or higher coffee intake may cause more harm than good, either because of its acidity or caffeine content.
对于一部分患有胃酸、烧心、失眠、心悸或者对咖啡因过敏的人，经常饮用大量咖啡，咖啡的酸性或者过量的咖啡因很可能对他们的身体造成伤害。
Coffee on the other hand gives an instant 'fix' and helps people be alert and ward off sleepiness when at work thanks to the caffeine content in the drink.
咖啡在另一方面则刹那间'修理'，帮助人们提高警觉，防范于当嗜睡由于工作的咖啡因含量的饮料。
Mark One has raised millions of dollars in venture capital to develop a more ambitious cup that claims to track the type and brand of drink inside, including calorie and caffeine content.
Mark One已筹集了数百万美元的风险资本，以开发一款更加雄心勃勃的水杯，据称其能够追踪杯中饮品的种类和品牌，包括卡路里和咖啡因含量。
The caffeine content of the decaffeine instant tea is 80% lower than that ofthe nondecaffeine instant tea, and the polyphenols, amino acids, water, soluble materials are highly preserved.
该速溶茶中的咖啡碱含量比未脱咖啡碱的速溶茶低80%以上，且茶多酚、氨基酸、水浸出物等风味物质的保留量高。
It comes in the same 23.5-ounce can as Four Loko but has a lower alcohol content, 9.9 percent, and, according to Michael Michail, the company President, less caffeine.
依照公司总裁Michael Michail的说法，它和Four Loko一样有23.5盎司的罐子，但有更低的仅9.9%酒精含量，更少的咖啡因。
The results showed that much of caffeine in green tea could be removed using supercritical CO2 and better moisture content of green tea for extraction is 40%.
试验结果表明，超临界CO2萃取技术可以有效地脱除绿茶中大部分的咖啡碱；较佳的茶叶含水量为40%左右；
The results showed that the content of anthoxanthin, Zn, caffeine and anthocyanin in the special purple tea was higher than that in Yunkang 10, while that of theanine and catechin is lower.
结果表明，特种紫茶在黄酮类、咖啡碱、锌和花青素含量上较对照要高，而茶氨酸和儿茶素总量则较对照低；
The results showed that the content of anthoxanthin, Zn, caffeine and anthocyanin in the special purple tea was higher than that in Yunkang 10, while that of theanine and catechin is lower.
结果表明，特种紫茶在黄酮类、咖啡碱、锌和花青素含量上较对照要高，而茶氨酸和儿茶素总量则较对照低；
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