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num. 三22 次
Fast trains can cover the 500km between the two cities in three hours.
高速列车三小时就能跑完两城之间500公里的路程。
“Insects that today are a minor problem may become a major problem if they can produce three or four generations in a year,” says forest ecologist John Stanturf.
森林生态学家约翰·斯坦图夫说：“如今只是小问题的昆虫，如果一年能繁殖三四代，就可能变成大问题。”
Covering about two and a half acres, Pavlopetri’s three main roads [connected] some 50 rectangular buildings, all of which had open courtyards.
帕夫洛彼特里占地约两英亩半，三条主干道{{18}}了大约50座长方形建筑，这些建筑都带有露天庭院。
An infant born to a hunter-gatherer society could have more than ten caregivers — this contrasts starkly to nursery settings in the UK where regulations call for a ratio of one carer to four children aged two to three.
出生在狩猎采集社会的婴儿可能有十多位照料者——这与英国的托儿所形成了鲜明对比，英国的规定要求，对于两到三岁的儿童，照料者与儿童的比例为一比四。
While around three quarters of Scottish homes are built from Scottish timber, the use of home-grown wood in England is only around 25 percent.
苏格兰约四分之三的住宅是用苏格兰木材建造的，而英格兰本土木材的使用率只有25%左右。
One in three Americans who are at least 40 have or plan to have a job in retirement to prepare for a longer life, according to a survey conducted by Harris Poll for TD Ameritrade.
根据哈里斯民意调查公司为德美利证券所做的一项调查，在40岁及以上的美国人中，每三人就有一人在退休后有工作或计划找工作，以便为更长的寿命做准备。
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one in three Americans enjoy earlier retirement.
每三个美国人中就有一人享受提前退休
If you were walking 3 miles a day, playing 18 holes of golf three times a week, or lifting 10-pound dumbbells for three sets of 10 reps, reduce activity to half a mile every other day, or nine holes of golf once a week with short walks on other days, or use 5-pound dumbbells for one set of 10 reps.
如果你以前每天步行3英里，每周打三次18洞高尔夫，或者举10磅哑铃做三组、每组10次，那么现在就把运动量减少到隔天走半英里，或者每周打一次9洞高尔夫、其他日子短距离散步，或者用5磅哑铃做一组10次。
If you were walking 3 miles a day, playing 18 holes of golf three times a week, or lifting 10-pound dumbbells for three sets of 10 reps, reduce activity to half a mile every other day, or nine holes of golf once a week with short walks on other days, or use 5-pound dumbbells for one set of 10 reps.
如果你以前每天步行3英里，每周打三次18洞高尔夫，或者举10磅哑铃做三组、每组10次，那么现在就把运动量减少到隔天走半英里，或者每周打一次9洞高尔夫、其他日子短距离散步，或者用5磅哑铃做一组10次。
The country produces only about 60 percent of the food it eats, down from almost three-quarters in the late 1980s.
英国自产的食品只占其消费量的约60%，而在20世纪80年代末这一比例接近四分之三。
These pauses typically occur at about three per second, and the eyes then jump to another spot, until several important points in the image are registered like a series of snapshots.
这种停顿通常每秒发生约三次，然后眼睛跳到另一个点，直到图像中的几个重要点像一系列快照一样被记录下来。
It takes about three weeks to a month to notice any significant changes in your weight [due to] altering your training program.
改变训练计划后，大约需要三周到一个月才能注意到由此带来的明显体重变化。
The State, War, and Navy Building, as it was originally known, housed the three Executive Branch Departments most intimately associated with formulating and conducting the nation’s foreign policy in the last quarter of the nineteenth century and the first quarter of the twentieth century — the period when the United States emerged as an international power.
这座大楼最初被称为国务院、陆军部和海军部大楼，在19世纪最后25年和20世纪最初25年——美国崛起为国际强国的时期——容纳了与制定和执行国家外交政策关系最为密切的三个行政部门。
In December of 1869, Congress appointed a commission to select a site and prepare plans and cost estimates for a new State Department Building. The commission was also to consider possible arrangements for the War and Navy Departments. To the horror of some who expected a Greek Revival twin of the Treasury Building to be erected on the other side of the White House, the elaborate French Second Empire style design by Alfred Mullett was selected, and construction of a building to house all three departments began in June of 1871.
1869年12月，国会任命了一个委员会，为新的国务院大楼选址，并制定规划和成本预算。该委员会还要考虑为陆军部和海军部作出可能的安排。令一些人震惊的是——他们原本期待在白宫另一侧建起一座与财政部大楼如出一辙的希腊复兴式建筑——阿尔弗雷德·马利特设计的精致的法国第二帝国风格方案被选中，一座容纳全部三个部门的大楼于1871年6月开工建设。
First two hours, now three hours — this is how far in advance authorities are recommending people show up to catch a domestic flight, at least at some major U.S. airports with increasingly massive security lines.
先是两小时，现在是三小时——这是当局建议人们为赶国内航班提前到达机场的时间，至少在一些安检队伍越来越长的美国大型机场是这样。
Some Congress members are trying to block the plan, and at least a dozen industry groups, four states, and three environmental groups are challenging it in federal court.
一些国会议员正试图阻止该计划，至少十几个行业团体、四个州和三个环保团体正在联邦法院对其提出质疑。
There is just one path for a lawyer in most American states: a four-year undergraduate degree in some unrelated subject, then a three-year law degree at one of 200 law schools authorized by the American Bar Association and an expensive preparation for the bar exam.
在美国大多数州，成为律师只有一条路：先读一个四年制的不相关专业的本科学位，然后在美国律师协会认可的200所法学院之一攻读三年制法律学位，再花一大笔钱准备律师资格考试。
Ground surveys allow archaeologists to pinpoint the places where digs will be successful. Most ground surveys involve a lot of walking, looking for surface clues such as small fragments of pottery. They often include a certain amount of digging to test for buried materials at selected points across a landscape. Archaeologists also may locate buried remains by using such technologies as ground radar, magnetic-field recording, and metal detectors. Archaeologists commonly use computers to map sites and the landscapes around sites. Two- and three-dimensional maps are helpful tools in planning excavations, illustrating how sites look, and presenting the results of archaeological research.
地面勘测使考古学家能够准确找出可以成功发掘的地点。大多数地面勘测需要大量步行，寻找诸如陶器碎片之类的地表线索。勘测通常还包括一定量的挖掘，在一片地域中选定的若干地点检测是否有埋藏物。考古学家还可以利用地面雷达、磁场记录和金属探测器等技术来确定地下遗存的位置。考古学家通常用计算机绘制遗址及其周边地貌的地图。二维和三维地图是规划发掘、展示遗址面貌以及呈现考古研究成果的有用工具。
On a five to three vote, the Supreme Court knocked out much of Arizona’s immigration law Monday — a modest policy victory for the Obama Administration.
周一，最高法院以五比三的投票结果推翻了亚利桑那州移民法的大部分内容——这对奥巴马政府来说是一次有限的政策胜利。
As Davidson notes, “In the 10 years ending in 2009, [U.S.] factories shed workers so fast that they erased almost all the gains of the previous 70 years; roughly one out of every three manufacturing jobs — about 6 million in total — disappeared.”
正如戴维森所指出的：“在截至2009年的10年里，（美国）工厂裁员速度之快，几乎抹去了此前70年的全部增长；大约每三个制造业岗位中就有一个——总计约600万个——消失了。”
There are three reasons for the public-sector unions' thriving.
公共部门工会的兴盛有三个原因。
He finally took that post at a major financial institution three years later.
三年后，他终于在一家大型金融机构担任了这一职务。
pron./a. 三（个，只...）19 次
In one example, an individual — acting as author, editor, and consultant — was able to use at least 15 journals as citation providers to articles published by five scientists at three universities.
在一个例子中，一个人身兼作者、编辑和顾问三职，竟能利用至少15种期刊为三所大学的五位科学家发表的文章提供引用。
The percentage of retirement-age people in the labor force has doubled over the past three decades.
在过去三十年里，劳动力中达到退休年龄的人所占的比例翻了一番。
They chose this particular behavior for three reasons, according to study co-author Eric Schwitzgebel, a philosopher at the University of California, Riverside: students’ attitudes on the topic are variable and unstable, behavior is easily measurable, and ethics literature largely agrees that eating less meat is good because it reduces environmental harm and animal suffering.
据该研究的合著者、加州大学河滨分校的哲学家埃里克·施维茨格贝尔说，他们选择这一特定行为有三个原因：学生对这一话题的态度多变且不稳定；这种行为很容易衡量；伦理学文献大体上认同少吃肉是好的，因为这能减少环境危害和动物痛苦。
The growth of higher education manifests itself in at least three quite different ways, and these in turn have given rise to different sets of problems.
高等教育的增长至少表现为三种截然不同的方式，而这些方式又相应地引发了不同的问题。
When a faculty or department grows from, say, five to 20 members within three or four years, (49) and when the new staff are predominantly young men and women fresh from postgraduate study, they largely define the norms of academic life in that faculty.
当一个学院或系在三四年内从比如说5名成员增加到20名，(49) 并且新进员工主要是刚完成研究生学业的年轻男女时，他们在很大程度上决定了该学院学术生活的规范。
Mr. Roth has three community-college students enrolled in a work-placement program, with a starting wage of $13 an hour that rises to $17 after two years.
罗斯先生招收了三名社区大学的学生参加一个实习项目，起薪为每小时13美元，两年后涨到17美元。
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Formerly it lasted three days, [but] by the 1980s it more commonly lasted a day and a half.
过去婚礼要持续三天，但到了20世纪80年代，更常见的是持续一天半。
This could add value to their businesses in three ways.
这可以从三个方面为它们的业务增加价值。
Previous studies on CSR have had trouble differentiating these effects because consumers can be affected by all three.
以往关于企业社会责任的研究难以区分这些效应，因为消费者可能同时受到这三方面的影响。
But the Nobel Foundation’s limit of three recipients per prize, each of whom must still be living, has long been outgrown by the collaborative nature of modern research — as will be demonstrated by the inevitable row over who is ignored when it comes to acknowledging the discovery of the Higgs boson.
而诺贝尔基金会每个奖项最多三名获奖者且获奖者必须在世的限制，早已不适应现代研究的协作性质——在表彰希格斯玻色子的发现时，围绕谁被忽略而必然产生的争吵就将证明这一点。
Ben-Shahar uses three optimistic exercises.
本-沙哈尔采用三种乐观练习。
This top-down conception of the fashion business couldn’t be more out of date or at odds with the feverish world described in Overdressed, Elizabeth Cline’s three-year indictment of “fast fashion.”
这种自上而下的时尚业观念已经过时至极，与《过度着装》中描述的那个狂热世界也格格不入——《过度着装》是伊丽莎白·克莱因耗时三年写成的对“快时尚”的控诉。
In Arizona v. United States, the majority overturned three of the four contested provisions of Arizona’s controversial plan to have state and local police enforce federal immigration law.
在“亚利桑那州诉美国”一案中，多数法官推翻了亚利桑那州一项颇具争议的计划中四项受到质疑的条款中的三项，该计划旨在让州和地方警察执行联邦移民法。
Two of the three objecting Justices — Samuel Alito and Clarence Thomas — agreed with this Constitutional logic but disagreed about which Arizona rules conflicted with the federal statute.
三位持反对意见的大法官中有两位——塞缪尔·阿利托和克拉伦斯·托马斯——赞同这一宪法逻辑，但在亚利桑那州哪些规定与联邦法规相冲突的问题上意见不同。
Three provisions of Arizona’s plan were overturned because they ____
亚利桑那州计划中的三项条款被推翻，是因为它们____
You won’t be eating out a lot, but save your pennies and once every few months treat yourself to a set lunch at a good restaurant — £1.75 a week for three months gives you £21 — more than enough for a three-course lunch at Michelin-starred Arbutus.
你不会经常下馆子，但可以攒点零钱，每隔几个月犒劳自己一次，去一家好餐馆吃顿套餐午饭——每周攒1.75英镑，三个月就有21英镑——足够在米其林星级餐厅Arbutus吃一顿三道菜的午餐了。
You won’t be eating out a lot, but save your pennies and once every few months treat yourself to a set lunch at a good restaurant — £1.75 a week for three months gives you £21 — more than enough for a three-course lunch at Michelin-starred Arbutus.
你不会经常下馆子，但可以攒点零钱，每隔几个月犒劳自己一次，去一家好餐馆吃顿套餐午饭——每周攒1.75英镑，三个月就有21英镑——足够在米其林星级餐厅Arbutus吃一顿三道菜的午餐了。
Critics make three main arguments against gene patents: a gene is a product of nature, so it may not be patented; gene patents suppress innovation rather than reward it; and patents’ monopolies restrict access to genetic tests such as Myriad’s.
批评者反对基因专利的主要理由有三：基因是自然的产物，因此不能申请专利；基因专利压制而非奖励创新；专利垄断限制了人们获得像麦利亚德公司那样的基因检测。
No disciplines have seized on professionalism with as much enthusiasm as the humanities. You can, Mr. Menand points out, become a lawyer in three years and a medical doctor in four. But the regular time it takes to get a doctoral degree in the humanities is nine years. Not surprisingly, up to half of all doctoral students in English drop out before getting their degrees.
没有哪个学科像人文学科这样热衷于专业化。梅南先生指出，你可以用三年成为律师，用四年成为医生。但在人文学科获得博士学位的正常时间却是九年。毫不奇怪，多达一半的英语专业博士生在获得学位前就退学了。