Bring a photo of your family to class. Work in groups of four. Talk about your photo.
拿一张自己全家的合影来，4个人一组看照片做会话。
Read the passage again and make notes in the two columns. then discuss your notes in groups of four.
学生再次逐段细读课文，再次进行深层思考，找出二个大国之间的相同和不同。
Work in groups of four, one student says out the situation and other students describe their feelings.
小组活动，四人小组，一人说出情景，其余三人描述感受。
If collapsed containers were bundled together in groups of four, ships could be loaded far more quickly, cutting the time spent in ports.
若集装箱可以四个为一组堆起来，轮船可以用更快的速度装货，减少在港时间。
If collapsed containers were bundled together in groups of four, ships could be loaded more quickly, cutting the time spent in ports.
如将折叠起来的集装箱四个一组捆在一起，则可更快地往船上装货，减少在港口停留的时间。
He finds that the proteins seem to freely associate in groups of four at the surface of each cell, but that in order for another cell to bind, it must have pretty much the exact same group of four.
研究者发现，这些蛋白似乎在细胞表面自由组合成包含四个蛋白的组合，但如果要结合其他的细胞，就必须有很多完全相同的这种组合。
Now waste from daily life in the city of Shanghai is required to be separated into four different groups.
如今，上海的日常生活垃圾被要求分为四类。
In the third study, 75 men and women were randomly assigned to one of four groups.
在第三项研究中，研究人员将75名男性和女性随机分为四个小组。
Down the hall, the girls in Carol Anderson’s second grade classroom are sitting in groups of three and four.
沿着走廊走下去，凯洛尔·安德森班里的二年级的女孩们正以三四个人为一组的形式坐着。
Then the offspring of the four groups, which were all raised in comfortable surroundings, were put through the same test.
而后，研究人员又对饲养于舒适环境中、四组鸡的幼雏进行了相同的测试。
Before completing the initial six-week treatment, 16 (15 percent) of the patients dropped out of the study in similar proportions in all four groups.
完成最初6周治疗前，16名患者（15%）从研究中脱失，全部四组比例一致。
After six months, women in all four groups had lost up to 10% of their body weight - but most could not keep this going.
在6个月后，所有4个试验小组的妇女都能减掉10%的体重，但是大部分人不能维持这个成果。
Mr Wondracek's analysis of over 6,500 Xing groups, containing a total of more than 1.8m users, suggested that his rogue site would be able to determine the identity of around four in ten visitors.
Wondracek分析了Xing的6500多个用户组，包含了超过一百八十万的用户，结果表明他的窃取网站能够分辨出将近十分之四的用户。
For example, blacks, Hispanics and women are significantly more likely than whites and men to say major conflicts exist between groups in at least three of the four areas tested in the survey.
比如，调查对四个领域进行了测试，至少在三个领域里，黑人、说西班牙语的人和女性比白人和男性明显更可能认为不同群体之间存在严重冲突。
The Inughuit are one of the smallest indigenous groups in the world, with a population of just 800 spread across the four settlements that make up the Thule region.
极地因纽特人属于我们这个世界规模最小的土著群体之一，800多人散布在图勒地区的四个定居点。
Some of the women in each of the four groups actually gained weight, some more than 10 lb. each.
每个组中都有一些人确实增加了体重，有些人每人增加了10磅。
The escalation of the fight against the pandemic will see the four most at-risk groups vaccinated in order of priority.
抗击流感战斗按照优先顺序给处于最危险的四个人群接种将不断扩大。
Wagon trains — groups of wagons — rode in four lines across the land when they passed through dangerous country. If attacked, the wagons could quickly form a circle for defense.
马车队(即一群马车)，当他们经过危险区时，他们排成四排向前行进，如果遭受到攻击时，这些马车就会很快地形成一个保护圈进行抵抗。
Three years on, at least one country from each of Professor Sapir’s four groups is in serious trouble.
今后的三年中，每个类型中至少有一个国家会遇到严重困难。
Looking over these four groups of pairs, start to fill in your ideas below each heading.
看一下这四组词汇，开始在完善其中的内容。
Two years ago, she responded to a help-wanted ad on the Fengruan website, one of the top four subtitle groups in China.
2年前，她在国内四大字幕组之一的风软字幕组网站上看到招聘广告，随即申请加入。
They tested the software on 12 users in three groups of four on Purdue's main campus in West Lafayette, Ind. , and at the University of Manitoba in Canada.
他们把在普渡大学位于印第安纳州西拉法叶（West Lafayatte）的中心校区以及加拿大马尼托巴（Manitoba）大学的12个人分成了3组，每组4人，来对该软件进行测试。
In the first, they brought together 12 groups of four individuals and told each group to come up with a 15-second advertisement for a made-up product.
第一个试验中，他们召集了12个4人小组，要求每一组都为一个化妆产品设计一个15秒的广告。
In the first, they brought together 12 groups of four individuals and told each group to come up with a 15-second advertisement for a made-up product.
第一个试验中，他们召集了12个4人小组，要求每一组都为一个化妆产品设计一个15秒的广告。
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