For the purposes of this study, the three groups have been combined.
为了这项研究工作，三个小组业已合并。
目前有三个组。
These three groups are rarely identical.
这三个群体很少是相同的。
The students were divided into three groups.
学生们被分成三组。
The substances that make up both groups of planets are divided into three groups—gases, rocks, and ices—based on their melting points.
这两组行星的构成物质根据熔点分为三类：气体、岩石和冰。
In the study, 402 9th- and 10th-grade students from four New York City high schools in low-income areas were divided into three groups.
在研究中，402名来自纽约四所低收入地区高中的9年级和10年级的学生被分为三组。
Participants were balanced across the three groups for age, sex, educational background, severity and duration of depression, and use of antidepressants.
就年龄、性别、教育背景、抑郁症的严重程度和持续时间以及抗抑郁药物的使用这几点来说，这三组参与者都保持了平衡。
Participants were balanced across the three groups for age, sex, educational back-ground, severity and duration of depression, and use of antidepressants.
这三组参与者在年龄、性别、教育背景、抑郁症的严重程度和持续时间以及抗抑郁药物的使用上保持平衡。
The youngsters fall into three groups: those who take after-school music, those who do after-school sports, and those with no structured after-school program at all.
这些儿童分为三组：课后学音乐组，课后做运动组，以及课后完全无安排组。
Researchers took 60 adults and randomly split them into three groups of 20.
研究人员选取了60名成人，随机分为3组，每组20人。
Please divide the children into three groups.
请把孩子们分成三组。
Sometimes the children are divided into three groups to play games.
有时，孩子们被分成三组来做游戏。
In a study, researchers gave three groups of six-year-old children a difficult task to complete on a computer.
在一项研究中，研究人员给三组六岁的儿童安排了一项困难的任务，让他们在电脑上完成。
Should you create three groups?
是应该创建三个组？
The men separated into three groups.
战士分为三组。
They can be divided into three groups.
他们可以被分为三组。
They were separated into three groups.
他们被分为三组。
The researchers divided them into three groups.
研究者将他们分为3组。
How do these three groups of animals reproduce?
这三组动物是怎样繁殖的？
Thesubjects were randomly divided into three groups.
这些人随机分为3组。
Unbridgeable gaps existed between these three groups.
这三个群体间存在不可逾越的鸿沟。
The investigator will be divided into three groups.
所有的调查员将被分为三个小组。
All three groups did equally well at this sort of thing.
在这一类的事情上，三组都做得很好。
In most companies, these three groups have poor communication.
在多数公司中，这三个小组的交流很糟糕。
The combined size of all three groups should total 100% (Figure 19).
三组合计大小为100%，如图19中所示。
Too often in the debates that will shape our future, I see three groups missing.
在构造我们未来的辩论中，我往往看不到三个群体的身影。
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