at

英[æt , ət]美[æt , ət]

prep.在，向，朝，处于…状态，在…远，（用于速度、比率等）以，达；

英语六级真题

Writing in the journal, the scientists describe how the storks from Germany were clearly affected by the presence of waste sites, with four out of six birds that survived for at least five months overwintering on rubbish dumps in northern Morocco, instead of migrating to the Sahel.

They gradually lose the habit of migrating in winterThey prefer rubbish dumps far away to those at home.

They can multiply at an accelerating rate.

They are more likely to be at risk of dying.

There is no best parenting style or philosophy, researchers say, and across income groups, 92% of parents say they are doing a good job at raising their children.

The state's facilities management project team is still in the process of developing its business justification and expects to have that completed and available to the public at the end of February, Martin said.

The reasoning behind this saying is that low oil prices discourage investment in new production capacity, eventually shifting the oil supply curve backward and bringing prices back up as existing oil fields—which can be tapped at relatively low marginal cost—are depleted.

The nations participating at COP 21 are focusing on quantitative emissions-reduction commitments.

The consumer was ultimately to be mentioned as well, especially by the likes of Dorothy Shaver, who could point to the sales figures at Lord & Taylor.

The Los Angeles Math Circle, held at the University of California, Los Angeles, began in 2007 with 20 students and now has more than 250.

The German traveler Johann Winckelmann pioneered the field of art history with his comprehensive study of Greek and Roman sculpture; he was portrayed by his friend Anton Raphael Mengs at the beginning of his long residence in Rome.

The British traveler Charles Thompson spoke for many Grand Tourists when in 1744 he described himself as being impatiently desirous of viewing a country so famous in history, a country which once gave laws to the world, and which is at present the greatest school of music and painting, contains the noblest productions of sculpture and architecture, and is filled with cabinets of rarities, and collections of all kinds of historical relics.

Tennessee's technical and community colleges will not outsource ( ' , 外包) management of their facilities to a private company, a decision one leader said was bolstered by an analysis of spending at each campus.

Students use forums to chat, play games, and solve problems together at no cost, or they can pay a few hundred dollars to take courses with trained teachers.

Some communities have agreed to share online—geneticists, for example, post DNA sequences at the GenBank repository ( ' , 库), and astronomers are accustomed to accessing images of galaxies and stars from, say, the Sloan Digital Sky Survey, a telescope that has observed some 500 million objects—but these remain the exception, not the rule.

Public policies aimed at young children have helped, including public preschool programs and reading initiatives.

Only about 50 students are invited based on their performance on written tests and at the USA Math Olympiad.

Morgan said last week that he would retire at the end of January because of the governor's proposal to split off six universities of the Board of Regents system and create separate governing boards for each of them.

Migrating birds affect ecosystems both at home and at their winter destinations, and disrupting the traditional routes could have unexpected side effects.

Many schools don't place academic competitions at the top of their priority list.

Its flagship stores in major U.S. cities depend heavily on international tourist spending, which shrank at many retailers due to a strong dollar.

It's important to allow readers and reviewers to see exactly how you arrive at your results.

It will slash staffing at its fleet of 770 stores, a move affecting some 3,000 employees.

Interest in elite high school math competitions has grown in recent years, and in light of last summer's U.S. win at the International Math Olympiad ( ' , IMO)—the first for an American team in more than two decades— the trend is likely to continue.

In poor families, meanwhile, children tend to spend their time at home or with extended family.

If you look at a lot of low-income communities in the United States, there are programs that are serving them, but they're primarily centered around ‘Let's get these kids' grades up,' and not around ‘Let's get these kids access to the same kinds of opportunities as more-affluent kids,' said Daniel Zaharopol, the founder and executive director of the program.

Ease of care was most important: summer dresses and outfits, in particular, were chiefly cotton, readily capable of being washed and pressed at home.

Early childhood experiences can be very consequential for children's long-term social, emotional and cognitive development, said Sean Reardon, professor of poverty and inequality in education at Stanford University.

Data on management expenses at the college system and in other state departments will be part of a business justification the state will use as officials deliberate the specifics of an outsourcing plan.

At this time there is nothing to take action on since the analysis has yet to be completed.

At a time when young beauty shoppers are often turning to Sephora or Ulta instead of department store beauty counters, Macy's hopes Bluemercury will help strengthen its position in the category.

After the high-pressure Countdown round at this year's national MathCounts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math Video Challenge took the stage to show their videos.

According to Richard Rusczyk, the company founder, the six U.S.team members who competed at the IMO last year collectively took more than 40 courses on the site.

A New York City-based nonprofit called Bridge to Enter Mathematics runs a residential summer program aimed at getting underserved students, mostly black and Hispanic, working toward math and science careers.

2% in November and December at stores open more than a year, a disappointing holiday season performance that capped a difficult year for a department store chain facing wideranging challenges.

So recently, I’ve looked at young people’s drinking and it’s obviously a major concern to government at the moment.

Mr.Ishiguro, have you ever found one of your books at a secondhand bookstore? According to a study of race and equity in education, black athletes are dropping out of college across the country at alarming rates.

And in today’s program, we’re looking at the results of two recently published surveys, which both deal with the same topic—happiness at work.

We have everything to gain by encouraging them to explore the world beyond their immediate experience and to prepare themselves for their turn at shaping that world.

They seem to be turning inward—generally in a pro-social manner, certainly with positive benefits for intimate relationships, but too often at the expense of a connection with the present and future world beyond, including the society they will one day inherit.

The roots of his speech, given in March at the roundtable meeting of environment and energy ministers from the G20 group of nations, stretch back to 1972, and the United Nations Conference on the Human Environment in Stockholm.

The revisions come at a time when green marketing is on the rise.

Still, it is true that American families are growing closer at the dawn of this new millennium ( ' , 千年).

Southern states without strong teachers' unions have schools at least as awful as those in union states.

Some are turning to the Internet, which is cheaper and offers concrete measurements like click-through rates— especially important at a time when marketing budgets are tight.

One recent study attempted to calculate the extent of this ecological overshoot of the human economy, and found that we are using 1.2 Earth's-worth of environmental goods and services—the implication being that at some point the debt will be called in, and all those services—the things which the planet does for us for free—will grind to a halt.

My own research at the Stanford Center on Adolescence uses in-depth interviews with small samples of youngsters rather than large-scale surveys.

Just having a strong teacher for one elementary year left pupils a bit less likely to become mothers as teenagers, a bit more likely to go to college and earning more money at age 28.

It protects incompetent teachers at the expense of students.

It has placed TV advertising at a great disadvantage.

In October 2000, the same month the survey was taken, the Washington-based Center for Media and Public Affairs wrote in its publication Media Monitor that, in a recent month of TV news coverage of American youth, just 2% of teens were shown at home, and just 1% were portrayed in a work setting.

I've been looking at what self-proclaimed experts were saying about unemployment during the Great Depression; it was almost identical to what Very Serious People are saying now.

For almost five centuries a very large supply of cod ( ' , 鳕 鱼) provided abundant raw material for an industry which at its peak employed about 40,000 people, sustaining entire communities in Newfoundland.

During commercials, an overlay will appear at the bottom of the screen, prompting viewers to press a button to request a free sample or order a catalogue.

As I said, structural unemployment isn't a real problem, it's an excuse—a reason not to act on America's problems at a time when action is desperately needed.

And the World Resources Institute ( ' , WRI) in its World Resources 2005 report, issued at the end of August, produced several such examples from Africa and Asia; it also demonstrated that environmental degradation affects the poor more than the rich, as poorer people derive a much higher proportion of their income directly from the natural resources around them.

According to a new study, the number of advertisements with green messages in mainstream magazines has risen since 1987, and peaked in 2008 at 10.

So Mike, you managed the innovation  project at CucinTech.

Researchers at Duke University scrutinized more than 160 published studies and found an absence of strong evidence that any of these approaches can make a big difference.

In fact, they are prescribed and they’regiven at a certain level, a dosage that is understood by a practitioner who’s been trained.

A lot of times people are not really aware of the impact they have, or the fact that taking them in combination with other medications might put you at increased risk for something that you wouldn’t otherwise being countering or be at risk for.

There is an incompatibility in the rate at which these are advancing relative to the way we're digesting it, he said.

The researchers found that telepressure is a major cause of stress at work, which over time contributes to physical and mental burnout.

The old days of the Antarctic being dominated by the interests and wishes of white men from European, Australasian and North American states are over, said Klaus Dodds, a politics scholar at the University of London who specialises in Antarctica.

That, too, explains the heavy Washington presence at this year's show, as these new technologies intrude upon heavily regulated areas.

Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon ( ' , 霓虹灯 ) sign.

Studying at university will only become less attractive if employers shift their focus away from where someone went to university--and there is no sign of that happening anytime soon.

Students do not merely benefit while at university; studies show- they go on to be healthier and happier than non-graduates, and also far more likely to vote.

Students at university also meet those likely to be in leading jobs in the future, forming contacts for life.

Researchers recently found kimberlite ( ' , 金伯利岩) deposits hinting at the existence of diamonds.

Putting in effect the policies in the agreement at once.

Perhaps the reason why so many universities offer their students so little is they know studying at a top university remains a brilliant investment even if you don't learn anything.

More than a century has passed since explorers raced to plant their flags at the bottom of the world, and for decades to come this continent is supposed to be protected as a scientific preserve, shielded from intrusions like military activities and mining.

Michael Yudell, a professor of public health at Drexel University in Philadelphia, said that modern genetics research is operating in a paradox: on the one hand, race is understood to be a useful tool to illuminate human genetic diversity, but on the other hand, race is also understood to be a poorly defined marker of that diversity.

Many top firms will not even look at applications from those who lack a 2.1

It is about the flashiness and the gadgets, said John Curran, managing director of research at Accenture.

In some ways they're at greater risk of falling through the cracks, says researcher Vladimir Carli.

In other words, a few countries are benefiting enormously from the consumption of fossil fuels, while at the same time contributing disproportionately to the global burden of climate change.

In a 2011 study, she investigated the effects of implementing a Results Only Work Environment ( ' , ROWE) on the productivity and well-being of employees at Best Buy's corporate headquarters.

His attitude to state intervention has looked confused ever since his bizarre 2006 lament ( ' , 叹惜) that chocolate oranges placed seductively at supermarket checkouts fueled obesity.

Fewer innovative products were found at this year's electronic products show.

Few students are willing to bear the burden of debt incurred at university.

Dr.Donald Sadoway at MIT started his own battery company with the hope of changing the world's energy future.

But now these segments are looking at slower growth curves – or shrinking markets in some cases – as consumers are not as eager to spend money on new gadgets.

Being stationed in Antarctica involves adapting to life on the planet's driest, windiest and coldest continent, yet each nation manages to make itself at home.

Bearded Russian priests offer regular services at the Orthodox church for the 16 or so Russian speakers who spend the winter at the base, largely polar scientists in fields like glaciology and meteorology.

At least three Russian stations are already operating in Antarctica, part of its effort to challenge the dominance of the American GPS, and new stations are planned for sites like the Russian base, in the shadow of the Orthodox Church of the Holy Trinity.

As some countries expand operations in Antarctica, the United States maintains three year-round stations on the continent with more than 1,000 people during the southern hemisphere's summer, including those at the Amundsen-Scott station, built in 1956 at an elevation of 9,301 feet on a plateau at the South Pole.

Annual fees have risen from ￡1,000 to ￡9,000 in the last decade, but contact time at university has barely risen at all.

And while assessments vary widely, geologists estimate that Antarctica holds at least 36 billion barrels of oil and natural gas.

A study of employees at health insurance provider Aetna revealed that roughly one quarter of those taking in-office yoga and mindfulness classes reported a 28% reduction in their stress levels and a 20% improvement in sleep quality.

8 hours at work daily, and the majority of working professionals spend additional hours checking in with work during evenings, weekends and even vacations.

Today, I’d like to talk about what happens when celebrity role models get behind healthyhabits, but at the same time promote junk food.

The third element of love in Sternberg’s theory is what he calls decision commitment, the decision that one is in a love relationship, the willingness to label it as such and the commitment to maintain that relationship at least for some period of time.

The purpose of today’s lecture, as you have seen from the title and the abstract, is to examine in more detail the problems facing small- and medium-sized enterprises which arise at least in part from having to adapt to rapid advances in technology.

Some 10,000 pairs of the birds, called fulmars, a kind of Arctic seabird, make their nests on Devon Island, north at the Arctic circle.

She’s figured out that it will take her another three years to pay it off at 30 dollars a month.

Now what’s interesting about the theory is what do you have if you only have one out of three or two out of three? What do you have and how is it different if you have a different two out of three? What’s interesting about this kind of theorizing is it gives rise to many different combinations that can be quite interesting when you break them down and start to look at them carefully.

Later in these series, you will hear from Stacy Collins and Mill Wilson, fellow social workers at the National Association of Social Workers.

I’m a social worker, a lobbyist and a special assistant to the executive director at the National Association of Social Workers.

柯林斯高阶英汉双解学习词典释义

PREP

在（某地）；在（某场合）

You use at to indicate the place or event where something happens or is situated.

例句

PREP

在（上学）

If someone is at school or college, or at a particular school or college, they go there regularly to study.

例句

PREP

在…旁边；靠近

If you are at something such as a table, a door, or someone's side, you are next to it or them.

例句

PREP

从相隔（一段距离）的地方;呈…角度

When you are describing where someone or something is, you can say that they are at a certain distance. You can also say that one thing is at an angle in relation to another thing.

例句

PREP

在（某时间或时刻）

If something happens at a particular time, that is the time when it happens or begins to happen.

例句

PREP

在（某一年龄时）；在…岁时

If you do something at a particular age, you do it when you are that age.

例句

PREP

以，达（某一速度、频率、水平或价格）

You use at to express a rate, frequency, level, or price.

例句

PREP

以，达（某一数量）

You use at before a number or amount to indicate a measurement.

例句

PREP

朝（某人或某物看）；向（某人掷物）；冲（某人说话）

If you look at someone or something, you look towards them. If you direct an object or a comment at someone, you direct it towards them.

例句

PREP

向，朝（某人微笑、招手等）

You can use at after verbs such as 'smile' or 'wave' and before nouns referring to people to indicate that you have put on an expression or made a gesture which someone is meant to see or understand.

例句

PREP

（指）向…

If you point or gesture at something, you move your arm or head in its direction so that it will be noticed by someone you are with.

例句

PREP

致力于;定位于;期望达到

If you are working at something, you are dealing with it. If you are aiming at something, you are trying to achieve it.

例句

PREP

应（某人邀请或要求）

If something is done at someone's invitation or request, it is done as a result of it.

例句

PREP

处在…状态

You use at to say that someone or something is in a particular state or condition.

例句

PREP

（用于所有格代词和形容词*高级前，表示某人或某物在此时的某一特征*鲜明）

You use at before a possessive pronoun and a superlative adjective to say that someone or something has more of a particular quality than at any other time.

例句

PREP

以…方式

You use at to say how something is being done.

例句

PREP

（表示某人重复做某事）

You use at to show that someone is doing something repeatedly.

例句

PREP

在…方面（擅长）

You use at to indicate an activity or task when saying how well someone does it.

例句

PREP

对…的反应

You use at to indicate what someone is reacting to.

例句

英汉词典释义

prep.

(表示位置) 在, 于; 到达, 达到; 经, 由; 在…旁, 靠近; 在…里; 在…上; 在…方位

(表示时间)在, 在…时刻[时辰, 期间, 阶段, 时节]; 在…岁时

(表示状态)处于…状态, 在…情况下;处于*佳（或*差等）状态；在全盛（或谷底等）时期

(表示方式)以…的方式; 通过一次…的动作

(表示原因)因为, 由于; (与形容词连用）因为，由于，对…

(表示距离)从, 在距离…处; 在…远；从相隔…远的地方

(表示目标)朝, 向, 对着

(表示环境)出席, 参加

(表示方向)在…方面;（与形容词连用，表示状况）在…方面

（用于动词后，涉及未做成或未做完的事）

用于速度、比率等）以，达

应…（而）；响应；回答

n.

阿特(老挝辅币单位；100 阿特 = 1 基普)

英英词典释义

Noun

1. 100 at equal 1 kip

行业词典

土木工程： 平面交叉；at-grade intersection, grade crossing；