There are no significant differences between the two groups of students.
这两组学生没有明显差别。
Unsupported mothers are one of the fastest-growing groups of welfare claimants.
无经济支持的母亲们是申请福利的群体中人数增长速度最快的一部分。
The two biologists found, to their surprise, that both groups of birds survived equally well.
这两位生物学家惊奇地发觉，两组鸟都同样很好地活了下来。
Groups of tourists crowded the main streets.
大街上挤满了成群的游客。
In the depths of the French Guyanese rainforest, there still remain unusual groups of indigenous people.
在法属圭亚那热带雨林的深处，仍然有罕见的土著人群体。
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。
And this becomes more of a problem when colleges don't talk about the class advantages and disadvantages of different groups of students.
当大学不探讨不同学生群体的阶级优势和劣势，这就成了一个更大的问题。
Mobility of this kind also meant mobility of ideas, their transference across frontiers, their simulataneous impact upon many groups of people.
这种流动也意味着思想的流动，他们跨越国界的转移，他们对许多群体的同时影响。
Fresh groups of guests arrived.
新客成批到达了。
A fight broke out between rival groups of fans.
比赛双方球迷打了起来。
She asked her students to get into groups of four.
她让学生每四人分为一小组。
Fighting had broken out between rival groups of fans.
双方球迷发生了打斗。
The students work individually, then pool their ideas in groups of six.
学生先分头工作，然后六人一组交流心得。
Ordered arrangements of large groups of atoms and molecules are highly improbable.
大的原子群和分子群的有序排列是极不可能的。
Some groups of consumers are slow to pick up trends in the use of information technology.
有些顾客群对信息技术应用方面的潮流反应迟钝。
They compared the fat intake of groups of vegetarians and meat eaters, and matched their diets up with levels of harmful blood fats.
他们比较了素食者组和肉食者组的脂肪摄入量，并把他们的膳食和血脂危险水平对应起来。
Groups of wind turbines are known as wind farms.
风力涡轮机组被称为风力发电场。
Everywhere groups of boys were gathered together.
到处都是成群的男孩聚集在一起。
It's necessary to wear the mask in the groups of people.
在人群中戴口罩是必要的。
The company creates groups of products, like ice cream balls and teacups.
该公司推出了一系列产品，比如冰淇淋球和茶杯。
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。
In his study two groups of people listened to a person talking in a noisy room.
在他的研究中，两组人听一个人在嘈杂的房间里讲话。
Every morning Tim often sees some groups of middle-aged women dance in the square.
蒂姆每天早上经常看到一些中年妇女在广场上跳舞。
To show that they were right, they gave two groups of students a problem to work out.
为了证明他们是对的，他们给两组学生出了一道题，让他们去解决。
Jane always tells everyone that she doesn't have the courage to be around groups of people.
简总是告诉每个人，她没有勇气和一群人待在一起。
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