People-watching is a fantastic way to sharpen your observational skills.

观察人群是磨练观察能力的绝佳方式。

However, they were both observational, meaning it's impossible to tease out cause and effect.

然而，它们都是观察到的，这意味着不可能梳理出因关系。

The study was observational and didn't show cause and effect, but the scientists behind it theorize that better weather leads people to leave their home more often.

这项研究是观察性的，没有显示因关系，但背后的科学家认为，更好的天气会有助人们更频繁地走出家门。

It's important to note that so far, most of the studies on blue light have been observational — meaning they looked at what happened but didn't control the amount of light to see if actually caused the sleep problems.

重要的是要注意，到目前为止，大多数关于蓝光的研究都是观察性的——这意味着他们观察了发生的事情，但没有控制光量以查看是否真的导致了睡眠问。

There have been many studies on the health benefits of coffee. Recently, researchers at the University of Southampton’s Faculty of Medicine in Great Britain looked at results from 201 observational coffee studies and 17 clinical trials of coffee.

有很多关于咖啡对健康的益处的研究。最近，英国南安普顿大学医学院的研究人员对咖啡进行了研究，他们观察了201项观测性研究和17项临床试验的结。

The field experiment represents the most extreme form of intervention in observational methods.

现场实验的干涉形式是所有观测方法中最极端的。

Observational studies, yes. But no true experiments.

虽然有观察性研究。但没有进行过真正的实验。

There's lots of other observational evidence as well.

还有很多其他的观测证据。

An observational study reviewed 7 years of data from calls to Australian poison information center.

一项观察性研究回顾了7来澳大利亚有毒物情报中心的通话信息数据。

And so we want to tease those out from observational data.

所以我们想从观测数据中梳理出这些。

The city was observational and didn't show cause an effect, but the scientists behind it theorize that better weather leads people to leave their homes more often.

这座城市是观测用的，没有显示出原因，但背后的科学家们提出了理论，更佳的天气会导致人们更为频繁地离开家园。

The researchers said progress in observational technology helped them reach their findings.

研究人员表示，观测技术的进步帮助他们得出了这一发现。

It's an observational rebuttal of the LambdaCdm Model of the universe! No!

是对冷暗物质模型的观测反例，不对！

Like studies on animals, large-scale observational studies are not in themselves conclusive.

与对动物的研究一样，大规模的观察性研究本身并不是结论性的。

And listen, even when I talk about my beauty or whatever, I'm talking about it from an observational standpoint. Being a dark-skinned 57-year-old woman, I see how other people, I'm good.

即使当我谈论我的美丽或其他什么的时候，我也是从观察的角度来谈论的。作为一名 57 岁的深肤色女性，我看到别人如何，我很好。

Just to give you a little bit more information whenever you see a big big number here for the amount of subjects usually it means it's an observational study and you cannot possibly draw conclusions where you find effect.

告诉你们多一点信息，无论什么时候你看到受试者数量很大的数字通常意味着这是一个观察性研究，你不可能在产生效的地方得出结论。

A very small observational study in which people could sleep however they preferred found that those who slept on their right side slept slightly better than those on their left, followed by those on their backs.

一项非常小规模的观察性研究发现，无论人们怎样选择睡觉姿势，右侧睡觉的人比左侧稍微好一些，其次是仰卧的人。

They dove into 275 years' worth of research — combing through scientists' observational journals, reading historical texts, and even reaching out to the broader scientific community to see if anyone knew anything about records of abnormal worms.

他们钻研了275的研究资料——梳理了科学家们的观察日记，阅读了史文本甚至接触了更外延的科学团体，询问是否有人知道关于反常虫子的任何记录。

The researchers cautioned that the study was observational and the number participating was small, all male and living at high altitude, making it difficult to draw any firm or general conclusions.

研究人员提醒，这项研究是观察性的，参与研究的人数很少，而且都是生活在高海拔地区的男性，因此很难得出任何确切或一般性的结论。

However, observational work carried out in temperate deciduous forests by Kristina Anderson-Teixeira at the Smithsonian Conservation Biology Institute in Front Royal, Virginia, and her colleagues found no sign of this happening.

然而，弗吉尼亚州皇家前线史密森保护生物研究所的克里斯蒂娜·安德森·特谢拉和她的同事在温带落叶林在进行观察工作时，并没有发现这种情况发生的迹象。