什么是阿司匹林中的有效成分？
他推测正是这些无形的奖励中的情感成分使它们变得有效。
He theorizes that it is the emotional component of these intangible prizes that make them effective.
巧克力中的某些成分可以用来止咳，并产生更有效的药物。
Something in chocolate could be used to stop coughs and lead to more effective medicines.
目的是比较不同干燥方法对红花提取物中有效成分羟基红花黄色素A的影响。
The objective was to compare the different dehydrations on contents of Hydroxysafflor yellow A in Carthamus tinctorius L. extracts.
浸泡出来的茶饮料将含有足够的各种成分，包括真正有效的挥发油。
The resulting beverage will contain enough of the various ingredients, including the volatile oil, to be truly effective.
但请记住，这些成功的秘方在没有关键成分时都不会有效：那就是意志力。
But remember, none of these recipes for success will work without the key ingredient: willpower.
更有效的税收方式应是以食品成分在加工前的成本与食物成品价格之差为税基对食品生产商课税。
A more efficient tax would be a tax on producers of food, based on the difference between the cost of the ingredients before processing and the price for the finished product.
有效使用名称空间最重要的一步是学习如何保持这些成分的条理性。
The most important step in using namespaces effectively is to learn how to keep these straight.
机构研究也将帮助辨认在石榴和他们的直接模式的行动之间的有效成分。
Mechanistic studies would also help identify the active ingredients in the pomegranate and their direct mode of action.
和寄生虫一样，癌细胞依赖于宿主而获得营养成分，这也是扼杀肿瘤的这种治疗手段会如此有效的原因。
Just as parasites do, cancer depends on its host for sustenance, which is why treatments that choke off tumors can be so effective.
语义等价使得比较成为可能，它允许丢弃XML 中不重要的成分如可以忽略的空格，从而可以进行有效的比较。
Semantic equivalence makes that comparison possible -- it allows insignificant aspects of XML, like ignorable whitespace, to be discarded and a valid comparison to be made.
草药包括药草、草药材、草药制剂和草药成品，包含作为有效成分的植物部分或其它植物材料。
Herbal medicines include herbs, herbal materials, herbal preparations, and finished herbal products that contain parts of plants or other plant materials as active ingredients.
这不但是一个重大的突破，而且有力证实了增加更多成分就能产生一种更有效产品的可行性。
It's a significant breakthrough and a striking example of the effectiveness of adding more components to create a more active product.
该材料具有两种有效成分，通过它移动时的锂离子电池充电或放电，这有助于稳定活性物质，延长不活跃的电池寿命。
The material has both active components, through which lithium ions move when the battery is charged or discharged, and inactive ones that help stabilize the active material and extend battery life.
最新的研究揭示了香烟中主要有效成分-尼古丁是如何作用于大脑，抑制吸烟者的食欲。
New research reveals how nicotine, the active ingredient in cigarettes, works in the brain to suppress smokers' appetites.
制药商对传统中医药感兴趣，但是它们采取的是典型的西方方法——试图发现传统草药制剂的有效成分。
Pharmaceutical companies are interested in traditional Chinese medicine but take a typically Western approach - trying to identify the active ingredients of traditional herbal treatments.
假冒药物范围很广，既有不含任何有效成分的产品，也有含剧毒物质的产品。
Counterfeit medicines range from products containing no active ingredients to those containing highly toxic substances.
1996年，孟山都取得了一项欧洲基因专利，使大豆能够抵抗他们的公司生产农达除草剂，农达除草剂的有效成分是草甘膦。
Since 1996, Monsanto has held a European patent on genes that give soya beans resistance to the company's Roundup herbicide - specifically the active ingredient glyphosate.
科学家们发现，即使病人被告之安慰剂中不含任何有效成分，给病人服用这种“无效药”对病情医治还是卓有成效。
Patients can benefit from being treated with sham drugs even if they are told they contain no active ingredient, scientists have found.
你必须让自己知道你用的药方和非处方药物中有哪些有效成分。
You should educate yourself so you know what active ingredients are in the prescription and over-the-counter medicines you are taking.
剩下的一半志愿者则每天服用一颗“假的”没有有效成分的安慰剂。
The rest received a "dummy" placebo pill with no active ingredients.
甚至在某些流行的商业配方中质量都不一致；试验表明，从包装上所显示的数字来看，有效成分的浓度差异很大。
Quality is inconsistent even among popular commercial formulations; tests have shown that the concentrations of active ingredients can vary greatly from the amounts listed on the packaging.15.
它来自早在公元前五世纪就被用于民间配方的柳树皮，是这种树皮的一种有效成分。
The active component, willow bark, was used as a folk remedy as long ago as the 5th century BC.
它来自早在公元前五世纪就被用于民间配方的柳树皮，是这种树皮的一种有效成分。
The active component, salicylic acid, originally from willow bark, was used as a folk remedy as long ago as the 5th century BC.
所以他们建议使用青蒿素混合疗法(ACTs)，提取各种药物的有效成分来治疗可以防止抗药性的产生。
They advocate the use of artemisinin combination therapies (ACTs), which mix the active ingredient with another drug to stave off resistance.
不过，人们普遍认为只有在病人坚信他们所接受的治疗含有有效成分时安慰剂效应才会发生。
It was widely thought, however, that the effect only works if the patient believes that the treatment they are receiving contains an active ingredient.
科学家们说，其中很多饮料含有草药、植物或激素成分，这些成分至少在一些研究中显示出了有效性，不过也可能有副作用。
Many of the drinks contain herbal, plant or hormonal therapies which have been shown in at least some studies to be effective — but also may have side effects, scientists say.
研究人员无法确定鸡汤中的哪些成分能有效地防止感冒，但是认为这可能是蔬菜和鸡肉共同作用的结果。
The researchers couldn't identify the exact ingredient or ingredients in the soup that made it effective against colds but say it may be the combination of vegetables and chicken that work together.
通过这些试验，将能够更好地了解一个人需要多少剂疫苗才能获得免疫，以及每剂疫苗中必须含有多少有效成分(抗原)。
These trials will give a better idea of the number of doses required for a person to be immunized, as well as of the quantity on active principle (antigen) needed in each vaccine dose.
FDA法规事务代理副专员迈克尔 夏贝尔说：“该产品活性成分的安全性、有效性未向FDA提出。
The safety and effectiveness of the active ingredient in this product have not been demonstrated to the FDA.
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