She spent two years conducting trials to get a recipe that was both tasty and tooth-friendly.
她花了两年的时间试验，以得到一个既美味又不伤害牙齿的食谱。
In each set of trials, volunteers generally preferred the work of renowned artists, even when they believed it was by an animal or a child.
在每一组试验中，志愿者通常更喜欢知名艺术家的作品，即使他们认为那是动物或儿童的作品。
Frazier and Mosteller assert that medical research could be improved by a move toward larger, simpler clinical trials of medical treatments.
弗雷泽和莫斯蒂勒断言，医学研究可以通过向更大、更简单的医疗临床试验的方向发展而得到改进。
He needs to sharpen up before the Olympic trials.
在奥运会选拔赛之前，他需要进一步提高自己。
Randomized controlled trials carry more weight.
随机对照试验更有信服力。
Positive results would lead to human clinical trials.
如果结果令人满意的话，用于人体的临床试验也将随即展开。
For medical researchers, such trials are just the start.
对于医学研究人员而言，这种试验仅仅是个开始。
What does it matter if you're not first in the trials?
预赛得不到第一又有什么关系呢？
New drug undergoing human trials offers hope of breakthrough.
试验中的药物给人类带来希望。
Randomised trials "give you the chance to be surprised", Ms Duflo says.
随机试验“给了你吃惊的机会”，Duflo女士说。
We face new trials and new uncertainties, from our economy to our security.
在从经济到安全的诸多领域，我们面临新的考验、新的变数。
Rhapsody has tried the tactic before, offering two-week and 60-day free trials.
此前，Rhapsody也曾尝试过这种策略，向用户提供两周以及60天的免费试用期。
The study’s counter-intuitive findings also strengthen calls for more clinical trials.
该研究出人意料的结果也强化了进行更多临床试验的需要。
Here are some examples from my own life where I used 30-day trials to establish new habits.
以下是一些我用“30天试验”培养新习惯的例子。
If the trials prove successful, airports could start using the technique within a year or two.
如果试验获得成功，机场可能会在一两年左右的时间里开始使用该项技术。
But she said it would take many years for a product to go through the necessary tests and trials.
不过，她表示，一种新产品得经过多种必需的测试和试验才能使用，而这个过程得耗上好几年。
African scientists contributed to the design of study protocols and conducted the clinical trials.
非洲科学家对研究方案的设计做出了自己的贡献并开展了临床试验。
Preclinical tests in animals encouraged the researchers to be confident about starting human trials.
在动物身上进行的临床前试验的结果鼓舞了研究人员，让他们有信心展开人体试验。
So far, their theory has held up in lab and animal testing with the next step being human trials.
到目前为止，这一理论已经通过了实验室测试和动物实验，下一步将进行人体实验。
Western medicine embraces all approaches shown to be safe and effective in rigorous scientific trials.
西医包括了所有经严格科学试验证明的安全有效的治疗方法。
The two economists made their names (and remade their discipline) by championing randomised trials.
因支持随机实验这两位经济学家声名鹊起，而且从新的角度定义了他们的学科。
The technique has worked in mice and now scientists believe they can begin human trials within two years.
据悉，这项技术已经在小白鼠身上取得成功，科学家认为两年内可以将其应用于人体试验。
We cannot be sure that this will work as well in humans, but this is the point of performing clinical trials.
我们并不能肯定这在人类中也行得通，而这关键就是进行临床试验。
We cannot be sure that this will work as well in humans, but this is the point of performing clinical trials.
我们并不能肯定这在人类中也行得通，而这关键就是进行临床试验。
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