所以是咖啡中的什么成分赋予它如此健康的特性呢？
So just what does coffee contain that gives it such healthful properties?
到底是洗发水和啤酒里的什么成分让他们的泡泡如此稳定呢？是什么样的物理机制控制着这样的稳定性？
What ingredients in shampoo and beer make their foams stable, and what physical concepts control that stability?
她报告了英国西北部出现的一种低价兴奋性药物“bubble”：没人知道到底是什么成分，也没有什么人在乎。
She reports the ubiquity now of cheap and cheerful "bubble" in north-west England: no one knows just what is in it and no one much cares.
他们当然无法猜测药剂里有什么成分，但是那时，他们也没有杨博士在埃默里大学耶基斯国家首席实验中心用草原田鼠做的实验。
They couldn’t guess what was in the potion, but then, they didn’t have the benefit of Dr. Young’s research with prairie voles at the Yerkes National Primate Research Center at Emory University.
“我们需要通过临床试验对它的活性成分进行研究，以便知道到底是里面的什么成分让失去知觉的人重新苏醒，”尤尼亚尔说。
"We need to study its active ingredients with clinical trials, to come to know what exactly is in it that resuscitates an unconscious man," Mr. Uniyal said.
食品标签的作用就是让消费者清楚知道他们买的食物里有什么成分。 而营销商就会巧妙编织语言，诱导消费者，让产品听起来比实际更健康。
Although food labels are supposed to tell us exactly what’s in the food we’re buying, marketers have created a language all their own to make foods sound more healthful than they really are.
我们知道它们在管上涂抹了一种液体，但我们不知道它们从哪里分泌出这种液体，也不知道它的化学成分是什么。
We know they smear a liquid on the tube, but we don't know where they secrete it from or what its chemical composition is.
当你分析这些光的时候，你可以计算出它们与地球的距离，并确定它们由什么构成，查明它们的化学成分。
When you analyze this light, you can figure out their distance from the Earth, and identify what they are made of, determine their chemical composition.
女性们想知道这是什么，为什么那么多牌子的矿物化妆品都有这成分。
Women want to know what it is and why it is in so many brands of mineral cosmetics.
他们在成分上有什么不同？
只用组成成分无法解答为什么胶合板要优于松木板这个问题。
Composition alone can't give you the answer to the question of why is the plywood superior to the solid pine board.
通常被认为是造成分数膨胀的原因是什么？
肥皂中的化学成分对我们有什么帮助？
虽然我不知道我究竟说了什么伤害你了，但是我知道我今天和你说的话中肯定有让你难受的成分，所以我很真诚地和你道歉！
Though I still had no idea what I said had hurt you, I know there must be some that made you sick today. Therefore, I am apologizing to you sincerely now!
他说：“从他们怎样帮助我们扩大我们绿色产品的影响到下一代环保洗涤剂应选择什么样的香剂成分，我们与他们交流多方面的事情”。
“We communicate with our people about everything from how they can help us magnify our green message, to what scent we should choose for our next eco-friendly laundry detergent,” said Hollender.
它们有一种音乐没有的成分，生生地把你吸进去，让你急着想知道后面发生了什么。
And they have an ingredient music does not have: they are compelling. You want to find out more.
下次你再看到涉及这总是被人遗忘的安慰剂的报告，你应该查查看报告中到底提没提到安慰剂的成分。否则，我们永远都不会知道那里面究竟是什么。
Next time you notice a reference to the often ignored placebo pill, check to see if the study describes the ingredients. You never know what's inside.
除此之外，这个体系还无法体现食品营养价值的其它重要因素，比如食品是否是全麦的，或者它含有什么其它的维他命和营养成分等等。
Plus, it disregards other important factors in a food's nutritional value, such as whether it's made with whole grains or what additional vitamins and nutrients it contains.
咖啡因可能是咖啡含有的最知名的成分，但看起来却没什么作用。一项使用脱去咖啡因的咖啡所作的实验显示其也能达到同样的降低血糖浓度的效果。
Caffeine, perhaps coffee's most famous component, seems to have little to do with it; studies that looked at decaffeinated coffee alone found the same degree of risk reduction.
和气相成分比较，液体的成分是什么？
What's the composition of liquid, compared to the composition of the gas phase?
因此如果所有这些成分基本上都是相同的，为什么有些洗发水会更贵一些？
So if all of these ingredients are basically the same, why are some shampoos more expensive?
在这篇文章里，我们会学到，什么是氯氧化铋，它从哪里来，为什么要被使用，化妆品里有这个成分是不是一个好选择。
In this article we'll learn what bismuth oxychloride is, where it comes from, why it is used, and if makeup with it as an ingredient is a good choice for you.
在这篇文章里，我们会学到，什么是氯氧化铋，它从哪里来，为什么要被使用，化妆品里有这个成分是不是一个好选择。
In this article we'll learn what bismuth oxychloride is, where it comes from, why it is used, and if makeup with it as an ingredient is a good choice for you.
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