The concept was invented by a group of students at Brown University in Rhode Island after a friend complained of waking up tired and performing poorly on a test.
这一概念是由罗德岛州布朗大学的一群学生创造的，因为他们的一个朋友抱怨说早上起来很累，考试发挥得很差。
Researchers took a group of teenagers who had never smoked and for one year tracked whether they took up smoking and how their mental health changed.
研究人员找来一组从不吸烟的青少年，用一年的时间追踪他们是否开始吸烟以及他们的心理健康如何变化。
She set up a self-help group for parents with overweight children.
她成立了一个由超重儿童家长组成的互助会。
They were able to walk faster, had improved balance, and were also able to get up out of a chair faster than the control group.
他们能够走得更快，提高了平衡感，也能比对照组更快地从椅子上站起来。
A survey by Barna research group found the top reason given by Americas for the fake news phenomenon is "reader error," more so than made-up stories or factual mistakes in reporting.
巴纳研究集团的一项调查发现，美国人认为出现假新闻现象最主要的原因是“读者错误”，而不是编造的故事或报道中的事实错误。
A charity group set up a stand to raise funds.
一个慈善团体设立了一个摊位来筹集资金。
Do you hate that moment when you stand up in front of a group to speak and everybody looks at you?
你讨厌站在一群人面前讲话，每个人都看着你的那种时刻吗？
Even without being taught new words a control group caught up with the other infants within a few months.
即使不教新单词，对照组也在几个月内赶上了其他婴儿。
In the park, you see a group of people, all looking up at the sky.
在公园里，你看到一群人，都在仰望天空。
If your project is being resisted, for example, by a group of veteran employees, ask another old-timer to speak up for it.
例如，如果你的项目遭到一群资深员工的反对，那就另请一位老前辈为它辩护。
Assisted migration means picking up members of a species, or members of a group of interdependent species and physically moving or translocating them.
辅助迁移指的是挑选一个物种的成员，或一组相互依赖的物种的成员，并在物理上移动或迁移它们。
Dominic, the show-off of the group, picked up one measly pear, put it on top of his snout, and performed a balancing act as we made our way back to the cave.
多米尼克，队伍里最爱耍酷的家伙，拿起一个很小的梨子，把梨子顶在鼻子上玩找平衡的杂耍，在我们回山洞的路上捣腾个没完。
At the front of the supermarket a charity group had set up a stand selling cooked sausages and flowers to raise funds.
一个慈善机构在一个大超市的前面设立了一个卖熟香肠和鲜花的摊位来筹集资金。
A group of water bugs was talking one day about how they saw other water bugs climb up a lily pad and disappear from sight.
一天，一群水生蝽在谈论它们如何看到其它的水生蝽爬上睡莲花的叶子，并从视线中消失。
We are finally waking up to the severity of the problem by supporting and developing a group of tools, apps and approaches intended to prevent scammers from getting through.
我们终于意识到问题的严重性，并通过支持和改进一系列工具、应用程序和方法以防止骗子得逞。
A flash mob is a group of people who come together suddenly in a public place, do something unusual for a short period of time, and then quickly break up.
快闪族，是指一群人突然在公共场所聚集，在短时间内做一些不寻常的事情，然后迅速散开。
They have decided to set up a group to help the stay-at-home children.
他们决定成立一个小组来帮助留守儿童。
In January this year, the Marine Conservation Society (MCS)—a group of people who work to protect the UK's seas and coast—asked local schoolchildren to come up with suggestions.
今年1月，海洋保护协会（MCS）——一个致力于保护英国海洋和海岸的组织——请求当地学生提出建议。
It's no small challenge for a blog run by a group of ordinary—if ambitious—young people, but the members of Generation O are up to the task.
对于由一群普通——如果有抱负——的年轻人运营的博客来说，这是一个不小的挑战，但GenerationO 的成员会胜任这项任务。
These guys never played as a team. This was a group of men showing up to work everyday.
这帮家伙打的根本不是团队篮球，这是一群每天为工作而工作的家伙。
MediaNews, a newspaper group, put up two paywalls in 2010; it has erected 23 so far this year.
2010年媒体新闻集团推行了2款付费墙，今年迄今为止已建立了23款。
It felt like each group had set up a conference call with the previous group.
好像每个小组事先跟前一个小组通过了电话。
The Chagos conservation Trust, a conservation group, would like to set up a reserve.
查戈斯保护信托基金会是一个自然保护组织，计划把查戈斯群岛变成一个自然保护区。
A group made up mostly of unmarried men poses for aphotograph in the remote village of Siyani, about 140km (86 miles) west of Gujarat'scapital of Ahmedabad, India, on October 5, 2011.
2011年10月5日，印度古吉拉特邦首府艾哈迈达巴德以西140公里的Siyani村，一群单身汉。
The POWER4 microprocessor collects a group of up to five instructions per clock cycle and can complete one group of instructions per clock cycle.
POWER 4微处理器每个时钟周期收集一组指令(最多有5个)，并在每个时钟周期内完成一组指令。
一个新的小组受命成立了。
One group even set up a school snack shop.
一个小组甚至建立了一个学校小吃店。
A medical group was set up to diagnose the case.
专门成立了一个医疗小组诊断这个病例。
Operators complain that a small group of users eats up most of the available network capacity.
运营商抱怨称，一小群用户耗尽了大部分的可用网络传输能力。
A special group has been set up in the school to help her.
学校为此成立了一个特别小组，以帮助她改过自新。
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