Nghĩa là gì: Aggregate concentration

Aggregate concentration

(Econ) Sự tập trung gộp.

measure twice and cut once Thành ngữ, tục ngữ

all at once

suddenly, without warning All at once the fire alarm rang so we had to leave the building.

at once

at the same time, simultaneously You can't do two things at once. You can eat or talk, but not both.

for once

one time For once he listened to what I said. Usually he ignores me.

give it the once-over

look at it quickly, look it over When I drove by the house, I gave it the once-over. It's nice!

once and for all

permanently I told him once and for all that I would not take the new job.

once in a blue moon

rarely We go out for Italian food once in a blue moon although we enjoy it very much.

once in a while

occasionally We like Japanese food so we go to that restaurant once in a while.

once or twice

a few times We went to that restaurant once or twice but we quickly became tired of it.

once over

(See give it the once-over)

the once over

(See give it the once-over)

bonce

the head

conceal from

hide from；keep secret from隐藏；隐瞒
You can't conceal your guilt from the police．你不能向警察隐瞒你的罪行。

conceive of

1．imagine；form the idea of设想；构想
It's impossible to conceive of anything better．想象不出更好的东西了。
The modern child finds it difficult to conceive of a time when there was no radio or TV．现代的儿童觉得很难想象过去没有收音机和电视机的时代是什么样子。
It is difficult to conceive of his doing such a thing．很难想象他会干出这样的事情。
2．consider考虑
Her father wouldn't conceive of her going to London at her age．她父亲不愿意考虑她这个年龄就去伦敦。
We refuse to conceive of such a solution to our problem．我们拒绝考虑采取那样的办法来解决我们的问题。

concentrate on

direct one's thought to；fix one's attention on把思想集中于；全神贯注于
We must concentrate on developing our foreign trade and commerce．我们必须把注意力集中在发展我们的对外贸易上。
Please be quiet，the children are concentrating on their homework．请安静，孩子们正在专心做家庭作业。
If you don't concentrate more on your work you'll be dismissed．假如你不更加专心地工作，你将被解雇。

concentrate on/upon

concentrate upon

concern oneself about

give one's attention to；worry about关心；关怀；担忧
We must concern ourselves with state affairs．我们必须关心国家大事。
Don't concern yourself about his opinion．不要管他的意见。
A good leader concerns himself in the welfare of his comrades．一个好领导总是关心他的同志们的福利的。

concern oneself about/in/with

concern oneself in

concern oneself with

concerned about

giving one's attention to；worrying about关心；担心；挂念
He is very much concerned about his son's future．他非常关心儿子的前途。
He was genuinely concerned over our financial difficulties．他真心实意地关心我们的经济困难。
They are all concerned for the boy's safety．他们都很担心孩子的安全。

concerned about/over/for

concerned for

concerned over

concerned with

1．having relation with与…有关
I am not concerned with such things．我同这些事无关。
The researches are concerned with alpha rays．这些研究都是关于阿尔法射线的。
2．giving one's attention to；worrying about关心；担心；忧虑
We must be concerned with the people's wellbeing．我们必须关心群众生活。
She is deeply concerned with our health problem．她非常关心我们的健康问题。

once (and) for all

1．definitely断然地
The mosquitoes must be destroyed once and for all．必须把这些蚊子全部消灭掉。
I'm going to settle this matter once and for all．我要彻底解决这个问题。
Once and for all，I'll not go swimming with you．我绝对不会同你一块去游泳。
2．permanently水远地；一劳永逸地
The two countries decided to end the war once and for all．两国决定这场战争从此结束。
This is not something that can be completed once for all．这不是件可以一劳永逸的事。

once for all

once more

a second time再度
He asked the question once more．他再次提出这个问题。
He said he would try once more．他说他将再试一次。

once upon a time

1．long ago从前；很久以前
Once upon a time there dwelt a fisherman on the lakeside．从前湖边住着一个渔民。
Once upon a time there lived a king who had an ugly daughter．从前有一位国王，他有一个丑陋的女儿。
2．sometime before now以前
Once upon a time she was thought to be the most talented actress in the country．以前她被认为是该国最有才华的女演员。

to whom it may concern

Idiom(s): to whom it may concern

Theme: SOMEONE

to the person to whom this applies. (A form of address used when you do not know the name of the person who handles the kind of business you are writing about.)
• The letter started out, "To whom it may concern."
• When you don't know who to write to, just say, "To whom it may concern."

once-over-lightly

Idiom(s): once-over-lightly (2)

Theme: CARELESSNESS

2. cursory; in a quick and careless manner. (An adverb.)
• Tom studied geometry once-over-lightly.
• Ann washed the dishes once-over-lightly.

once-in-a-lifetime chance

Idiom(s): once-in-a-lifetime chance

Theme: OPPORTUNITY

a chance that will never occur again in one's lifetime.
• This is a once-in-a-lifetime chance. Don't miss it.
• She offered me a once-in-a-lifetime chance, but I turned it down.

in concert

Idiom(s): in concert (with sb)

Theme: ASSISTANCE

in cooperation with someone; with the aid of someone.
• Mrs. Smith planned the party in concert with her sister.
• In concert they planned a lovely event.

give sb the once-over

Idiom(s): give sb the once-over

Theme: OBSERVATION

to examine someone visually quickly.
• John gives me the once-over every time he walks by me.
• Why does he just give me the onceover? Why doesn't he say hello?

get the once-over

Idiom(s): get the once-over

Theme: OBSERVATION

to receive a quick visual examination.
• Every time John walks by I get the once-over. Does he like me?
• I went to the doctor yesterday, but I only had a once-over.
• I wanted a complete examination, not just a once-over.

far as sb is concerned

Idiom(s): (as) far as someone is concerned AND so far as someone is concerned

Theme: OPINION

for all that someone cares; if someone is to make the decision.
• You can take your old dog and leave as far as I'm concerned.
• Far as I'm concerned, you can get out and never come back.
• So far as I'm concerned, you're okay.

so far as sb is concerned

every once in a while

Idiom(s): (every) now and then AND (every) now and again; (every) once in a while

Theme: TIME

occasionally; infrequently.
• We eat lamb every now and then.
• We eat pork now and then.
• I read a novel every now and again.
• We don t go to the movies except maybe every now and then.
• I drink coffee every once in a while.
• I drink tea once in a while.

Fool me once, shame on you; fool me twice, shame

One should learn from one's mistakes.

Once bitten, twice shy.

After an unpleasant experience, people are careful to avoid something similar.

What soberness conceals, drunkenness reveals.

People are less discreet under the influence of alcohol.

Even a blind squirrel finds a nut once in a while

This expression means that even if people are ineffective or misguided, sometimes they can still be correct just by being lucky.

Fool me once, shame on you; fool me twice, shame o

This means that you should learn from your mistakes and not allow people to take advantage of you repeatedly.

Fortune knocks once at every man's door

Everyone gets one good chance in a lifetime.

Going concern

A successful and active business is a going concern.

Once bitten, twice shy

If somebody is said to be once bitten twice shy, it means that someone who has been hurt or who has had something go wrong will be far more careful the next time.

Opportunity knocks but once

This idiom means that you only get one chance to achieve what you really want to do.

all at once|all|once

adv. phr. 1. At the same time; together. The teacher told the children to talk one at a time; if they all talked at one time, she could not understand them. Bill can play the piano, sing, and lead his orchestra all at once. 2. or all of a sudden Without warning; abruptly; suddenly; unexpectedly. All at once we heard a shot and the soldier fell to the ground. All of a sudden the ship struck a rock.
Compare: AT ONCE.

at once|once

adv. phr. 1. Without delay; right now or right then; immediately. Put a burning match next to a piece of paper and it will begin burning at once. Mother called the children to lunch, and Paul came at once, but Brenda stayed in the sand pile a little longer.
Synonym: RIGHT AWAY or RIGHT OFF.
Compare: ALL AT ONCE².

for the nonce|for|nonce

adv. phr. For now; for a while; temporarily. I haven't any note paper, but this envelope will do for the time being. She hasn't found an apartment yet; she's staying with her aunt for the time being.

đo hai lần và cắt một lần

Tiên đề khuyến khích các bước đầu tiên cẩn thận để tránh làm thêm sau này. Tôi phải anchorage lại cửa hàng vì tui đã cắt nhầm kích thước từ mảnh vật liệu cuối cùng của mình. "Đo hai lần và cắt một lần" nên là phương châm mới của tui !. Xem thêm: và, cắt, đo, một lần, hai lần. Xem thêm:

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