Except maybe physicists, because they have unbreakable laws and perfectly controlled experiments.

除了物理学家之外，因为他们有牢不可破的法则和完美的控制实验。

One is that urban and rural differences can be tested in a controlled experiment.

一点是城市黑鹂和农村黑鹂能在控制变量实验中测试。

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。

To test that out, the researchers conducted a control experiment, in which they broadcast some non-buzzy bats sounds.

为了检验，研究人员在对比实验中播放了某些非嗡嗡叫的蝙蝠叫声。

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。

D. Controlled experiments on wrens and other birds.

D. 鹪鹩和其他鸟类的对照实验。

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

如果你还记得的话， 这不是一个对照实验。

Now, what you've witnessed here today is a highly controlled social experiment.

现在，你们今天在这里目睹的是一场高度控制的社会实验。

That one little stick lets you ask a question, perform a controlled experiment, and then analyze the results to check your original hypothesis.

那个小小的试纸让你问一个问题，实行一个制式化的实验，分析结果来验证你的假设。

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.

科学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。