before

英[bɪˈfɔː(r)]美[bɪˈfɔːr]

prep.在…之前， 在…前面，比…重要；

conj.在…之前，到…为止，以免；

adv.以前；

英语六级真题

The lives of children from rich and poor American families look more different than ever before.

Since there were few museums anywhere in Europe before the close of the eighteenth century, Grand Tourists often saw paintings and sculptures by gaining admission to private collections, and many were eager to acquire examples of Greco-Roman and Italian art for their own collections.

Nearly half of high-earning, college-graduate parents enrolled their children in arts classes before they were 5, compared with one-fifth of low-income, lesseducated parents.

Funding agencies note that data paid for with public money should be public information, and the scientific community is recognizing that data can now be shared digitally in ways that were not possible before.

Europe hardly had any museums before the 19th century.

You will face problems in the aging of the population that have never been faced before.

Mr.De Keyzer, I’m a great lover of your book Moments Before the Flood.

The US has already lost more than a third of the native languages that existed before European colonisation, and the remaining 192 are classed by UNESCO as ranging between unsafe and extinct.

Parents, teachers, even the kids themselves, scored the youngsters on measures like acting before thinking and persistence in reaching goals.

Upon reflection, however, it is equally easy to feel like you have seen it all before.

To be sure, the battery still has a long way to go before the nightly recharge completely replaces the weekly trip to the gas station.

The market demand for electronic devices is now either declining or not growing as fast as before.

The demand for energy resources may compel renegotiation of Antarctica's treaties before their expiration.

The 83% of American employees who are stressed about their jobs – up from 73% just a year before – say that poor compensation and an unreasonable workload are their number-one sources of stress.

Scholars warn that Antarctica's political drift could blur the distinction between military and civilian activities long before the continent's treaties come up for renegotiation, especially in parts of Antarctica that are ideal for intercepting ( ' , 拦截) signals from satellites or retasking satellite systems, potentially enhancing global electronic intelligence operations.

Scan the highlights of this year's Consumer Electronics Show ( ' , CES), and you may get a slight feeling of having seen them before.

Now we are told Members of Parliament ( ' , MPs) will have a free vote before parliament is dissolved in March.

Many of the coolest gadgets this year are the same as the coolest gadgets last year – or the year before, even.

And even before then, scholars warn, the demand for resources in an energy-hungry world could raise pressure to renegotiate Antarctica's treaties, possibly allowing more commercial endeavours here well before the prohibitions against them expire.

Americans are working longer and harder hours than ever before.

Sadly the pleasure that comes from extravagances often disappears long before the bills do.

In other words, it appears that minds give out before their bodies do.

We should take our future into consideration in making decisions concerning climate change before it is too late.

We get distracted before we can turn down the heating.

They have to operate for long periods of time before the costs of development have been recovered.

One needs the designers, and perhaps the regulators, before the builders and operators, and each group of workers in training has to know there is work waiting beyond graduation.

On top of the tragic loss of life, the accident in California will cast a long shadow over the future of space tourism, even before it has properly begun.

Kids who are the first in their families to brave the world of higher education came on campus with little academic know- how and are much more likely than their peers to drop out before graduation.

"You can get enough protein and meet the RDA before you even get to dinner," says Pipitone.

Agencies and companies throughout the world are working on developing technology that would dispose of or capture space debris before it causes serious damages.

And it's not like this hasn't happened before.

And to get at the contents of a single iPhone, the government says it needs a court order and Apple's help to write new code; in earlier versions of the iPhone, ones that were created before Apple found religion on 热衷于 privacy, the Fbi might have been abl

As a recent report from the National Academy of Sciences highlights, these satellites hold tremendous potential for making satellite-based science more accessible than ever before.

As an organization of volunteers, AMSAT was putting "amateur" satellites in orbit decades before the current Cube Sat craze.

As stories go through the chains of people, they are refined, corrected and sorted out until they come finally to me and I have a chance to read through most stories before I go on the air.

Before writing Metamorphosis, Merian spent decades documenting European plants and insects that she published in a series of books.

Bridget O'Hanlon and her husband, who live in Cleveland, decided before their daughter was born that they would not post her photos online.

But before you dump all of your retail stocks, there are more facts you should consider.

But less than a month before hand, inspectors found significant problems with the fire safety system and push the opening back again to 2013.

But telling them that eating lots of high-fiber foods could reduce the risk of breast cancer before middle age, that's a powerful message.

Chemical testing showed that over the two years before her death, she moved about every two months.

Consequently, before going into any stressful situation, focus only on what you want to have happened.

Each day of Kwanzaa, usually before the evening meal, family and friends gather around the table and someone lights a candle, beginning with the black.

kids who are the first in their families to brave the world of higher education came on campus with little academic know-how and are much more likely than their peers to drop out before graduation.

For a brief moment during that stage of its life cycle, the tongue consists of two tiny half-tubes before merging into one.

In one study, researchers interview 955 people involved in traffic accidents, the majority of them reported having daydream just before the accident.

In other words, rewards are more intense for teens when they are with peers, which motivates them to pursue higher-risk experiences that might bring a big payoff such as the thrill of just making the light before it turns re.

It is believed to have originated in South America in the early 1900s, and later spread to Europe before crossing over to sub-Saharan Africa.

It is clear now that it's a matter of time before the entire European coastline disappears under water.

Just like drones before them, miniature satellites are beginning to fundamentally transform our conceptions of who gets to do what up above our heads.

Machines can't handle things they haven't seen many times before.

Many of the coolest gadgets this year are the same as the coolest gadgets last year—or the year before, even.

Most of them had never been abroad before.

My idea was to photograph this beautiful and very unique coastline, rich in history, before it's too late—as a last witness.

Nearly half of high-earning, college-graduate parents enrolled their children in arts classes before they were 5, compared with one-fifth of low-income, less-educated parents.

No, and he was away before I could get hold of the letter.

Once armed with a method for gaining access to iPhones, the government could ask to use it proactively, before a suspected terrorist attack—leaving Apple in a bind as to whether to comply or risk an attack and suffer a public-relations nightmare.

Parents, teachers, even the kids themselves, scored the youngsters on measures like "acting before thinking" and "persistence in reaching goals".

Scan the highlights of this year's Consumer Electronics Show CES, and you may get a slight feeling of having seen them before.

since there were few museums anywhere in Europe before the close of the eighteenth century, Grand Tourists often saw paintings and sculptures by gaining admission to private collections, and many were eager to acquire examples of Greco- Roman and Italian

So if you are a student who always reviews over black coffee, perhaps it would be sensible to prime yourself with a cup before the exam.

So I've just got to do my best, and take a couple of seconds to look through the first few lines before I launch into something.

Some of these images include figures never seen before in France, such as a woman playing a stringed instrument, possibly a character from mythology.

Still, if late sleepers want to lose a few pounds, they can go to bed earlier than they usually do, thereby reducing their chances of taking snacks before bedtime.

The 83% of American employees who are stressed about their jobs – up from 73% just a year before – say that poor compensation and an unreasonable workload are their number-one sources of stress.

The first thing every bank will do is study how much money I have and how much debt I have before they decide whether or not to lend me any more money.

The image which also contained novel descriptions of ants, fascinated a European audience that was more concerned with the exotic story unfolding before them than the gender of the person who painted it.

The passengers often say that seeing animals makes them feel much better, and helps them to calm down before a flight.

The researchers also note the recession hit some years before we see the beginning of the well-being drop, and before the steepest well-being decline, which occurred in 2013.

There is another reason why I want to chat with you before Monday.

To be sure, the battery still has a long way to go before the nightly recharge completely replaces the weekly trip to the gas station.

Two years before, a nationwide study of college graduates had shown that more than a third had made no significant gains in such mental abilities during their school years.

Upon reflection, however, it is equally easy to feel like you have seen it all before.

We have the ability to connect seemingly different threads to solve problems we've never seen before.

Weather conditions that drive this bizarre temperature surge have visited the Arctic before.

We've talked about Hume before in class, right?

When we're too collaborative, we want everyone to agree with a decision before we proceed.

without those masses of cooling sea ice, warm air brought to the Arctic can penetrate further inland than it ever did before.

You have to wait for the speaker to deliver quite a chunk of language before you then put it into the second language, which puts your short-term memory under intense stress.

柯林斯高阶英汉双解学习词典释义

PREP

（时间上）在…之前，早于

If something happens before a particular date, time, or event, it happens earlier than that date, time, or event.

例句

PREP

在（做某事）之前

If you do one thing before doing something else, you do it earlier than the other thing.

例句

ADV

在（某时间或某事）以前

You use before when you are talking about time. For example, if something happened the day before a particular date or event, it happened during the previous day.

例句

CONJ-SUBORD

在（他人做某事）之前

If you do something before someone else can do something, you do it when they have not yet done it.

例句

ADV

以前；以往；过去

If someone has done something before, they have done it on a previous occasion. If someone has not done something before, they have never done it.

例句

CONJ-SUBORD

（直到…）才；（过了…）才

If there is a period of time or if several things are done before something happens, it takes that amount of time or effort for this thing to happen.

例句

CONJ-SUBORD

（必须先具备某一条件）才能；在…之前（必须具备某一条件）

If a particular situation has to happen before something else happens, this situation must happen or exist in order for the other thing to happen.

例句

PREP

（方位）在…前面，在…面前

If someone is before something, they are in front of it.

例句

PREP

（所经位置）在…前面

If you tell someone that one place is a certain distance before another, you mean that they will come to the first place first.

例句

PREP

面对…（回答质询）

If you appear or come before an official person or group, you go there and answer questions.

例句

PREP

当着…的面；在…注视之下

If something happens before a particular person or group, it is seen by or happens while this person or this group is present.

例句

PREP

摆在…面前；使面对；使面临

If you have something such as a journey, a task, or a stage of your life before you, you must do it or live through it in the future.

例句

PREP

（重要性）超过；比…重要

When you want to say that one person or thing is more important than another, you can say that they come before the other person or thing.

例句

英汉词典释义

prep.

(表示位置)在…前面

(表示时间)先于, 在…以前

(表示比较)优于, 先于

(表示顺序)在…之前，（次序或排列）在前面

(表示目的)供…研究, 由…审判

表示面临或临近

当面

表示面对某人、某事时的反应

conj.

在…之前

到…为止，到…之前

以免；不然

（宁可…而）不愿

adv.

先前; 从前; 以前；过去；已经

英英词典释义

Adverb

1. earlier in time; previously;

2. at or in the front;