Equivalent numbers of each type continued to be given ordinary water as a control.

作为实验对照，让每种类型中相同数量的老鼠继续饮用普通水。

A non-smoking control group was recruited from the general population.

他们从普通群体中招募了一支不抽烟的实验对照组。

The remaining two experiments were controls, one with and one without a placebo.

剩下的两个实验是对照组，一组使用安慰剂，另一组不使用安慰剂。

The other two conditions were controls, where subjects only did either slow eccentric or fast eccentric training.

另外两组是对照组，实验对象只进行慢离心训练和快离心训练。

We discovered that this control experiment, which was obligatory in order to gain approval, never took place.

我们发现，这个为了获得批准而必须进行的对照实验从未发生过。

That would need randomised controlled trials, in which one group wore masks and the other did not.

这需要进行随机对照实验，一组戴口罩，另一组不戴。

We need more comprehensive, controlled trials with plenty of subjects before we can come to any real conclusions.

我们需要研究主题足够多的更全面的对照实验，在得出任何真实结论之前。

Seven of the 23 acted as a control group, and received no intervention from Dr Bolli after the surgery.

23中7为实验对照，术后未接受Bolli博士实验操作。

The study was not a controlled experiment designed to prove whether or how texting or other activities might cause crashes.

该研究不是旨在证明发短信或其它活动是否或如何导致车祸的对照实验。

I mean, if you remember, this isn't a controlled experiment.

如记得的话， 这不是一个对照实验。

D. Controlled experiments on wrens and other birds.

D. 鹪鹩和其他鸟类的对照实验。

The new hypothesis needs to be tested with a new controlled experiment.

新的假设需要用一个新的对照实验来检验。

In it, social scientists randomly assigned low-income families into a control group or one of two experimental groups.

其中，社会科家将低收入家庭随机分配到对照组或两个实验组之一。

Scientists have only recently started carefully testing Thayer's century old idea in controlled experiments to see if it's really as universal as he claimed.

科家们直到最近才开始在对照实验中仔细验证塞耶一个世纪前的想法，看看它是否真的像他声称的那样普遍。

A team of researchers from the University of New York conducted a randomized control trial with 691 depressed patients from 83 physician practices across England.

来自纽约大的研究团队在英格兰全境 83 名医生的 691 名抑郁症病身上进行了随机对照实验。

We have the first early results on productivity from these tools and one is a controlled experiment that was done with people writing business writing.

我们得出了这些工具的首个生产力结，其中一个是让们写商业文章的对照实验。

One drawback with the studies is that they are all retrospective, looking back at naturally occurring data rather than randomised-controlled experiments.

这些研究的一个缺点是它们都是回顾性的，回顾自然发生的数据而不是随机对照实验。

Peter Rothwell at the John Radcliffe Hospital in Oxford and his colleagues looked at deaths due to cancers during and after randomised trials of daily aspirin.

来自牛津的约翰·拉德克里夫医院的彼得·罗思韦尔（Peter Rothwell）和他的同事们研究了在每日服用阿司匹林的随机对照实验期间或者之后因癌症而死亡的病例。

And without the herbivore effect in the model-so in the control run-we found that only 50 percent of the permafrost area would remain by the year 2100.

如模拟中没有食草动物的影响，即在对照实验组中，我们发现到2100年，只有50%的永久冻土区能保留下来。

Archival voice: Celluloid, one of the earliest of plastics… Conservators also have turned to controlled experiments to get a grasp on how plastic artifacts degrade.

档案声音：赛璐珞，最早的塑料之一… … 保护员也转向对照实验来了解塑料制品是如何降解的。