Many studies do not use a control group.

许多研究没有使用对照组。

Pieces of watermelon were divided into experimental and control groups.

将西瓜片分为实验组和对照组。

There was also a fourth group, which was a control group.

还有第四组，是一个对照组。

The first was a control group that wasn't given a bonus.

第一组是没有奖金的对照组。

A year ago, the group controlled a lot of territory in Iraq and Syria.

一年前，ISIS控制着伊拉克和叙利亚的大部分领土。

And the fourth group- control group write about anything that happen to you during the day.

第四组是对照组，他们可以随便写下一天中遇到的任何事。

The Wall Street Journal newspaper says more than eight million people live in areas under the group's control.

华尔街日报称有800多万人生活在该组织控制下的地区。

But also, the students put in actually more time into the class and they outperformed the control group.

而且学生对课业付出更多时间，成绩比对照组好。

The United States-supported Kurdish group controls the town.

美国支持的库尔德组织控制着该镇。

But one group controlling all of this is highly unlikely.

但是一个团体控制所有这一切的可能性极小。

In other studies the control group doesn't know they are the control group.

在其他研究中，对照组并不知道自己是对照组。

One group was a control group, which means nothing was changed in their environments.

一组是对照组，这意味着他们的环境没有任何变化。

The first experiment established a control group, with no communication between the fish and the bees.

第一个实验建立了一个对照组，鱼和蜜蜂之间没有交流。

But this study didn’t have a control group for comparison, and it was never published in a peer-reviewed journal.

但这项研究没有用于比较的对照组，也从未在同行评审的期刊上发表过。

To " come into power" or " take power" in a country means that a person or group controls it in some way.

在一个国家，“come into power”或“take power”（执政、掌权）意味着一个人或一个团体以某种方式控制着这个国家。

Of the 311 children in question, 207 had such mothers, while the rest, who constituted the control group, did not.

在311名儿童中，有207人的母亲有精神分裂，而其余人则没有，他们构成了对照组。

Resources are in short supply and violent armed groups control over 60% of Haiti's capital and large parts of the country's primary agricultural areas.

资源短缺，暴力武装团体控制了海地首都 60% 以上的地区和该国大部分主要农业区。

One group of children was a control group; the second group was taught to think back to experience that make them laugh or smile.

一群小孩组成对照组有人教第二组小孩回想让他们大笑或微笑的经历。

That meant participants were randomized into experimental or control groups, and that both participants and experimenters were blind to which experimental condition they were in.

这意味着参加者被随机分为实验组或对照组，参加者和实验者都对他们所处的实验条件一无所知。

At least nine people were killed in the air strikes, and that includes the leader of the military wing of Hamas, that group controls the Palestinian government and the US classifies it as the terrorist organization.

至少9人死于空袭, 包括哈马斯派军事领袖, 该组织控制巴勒斯坦政府而美国将其视为恐怖组织。