unfold, open

名詞 open:

1. a clear or unobstructed space or expanse of land or water
   同義詞：clear
2. where the air is unconfined
   同義詞：outdoors, out-of-doors, open air
3. a tournament in which both professionals and amateurs may play
4. information that has become public
   同義詞：surface

動詞 open:

1. cause to open or to become open
   同義詞：open up
2. start to operate or function or cause to start operating or functioning
   同義詞：open up
3. become open
   同義詞：open up
4. begin or set in action, of meetings, speeches, recitals, etc.
5. spread out or open from a closed or folded state
   同義詞：unfold, spread, spread out
6. make available
   同義詞：open up
7. become available
   同義詞：open up
8. have an opening or passage or outlet
9. make the opening move
10. afford access to
    同義詞：afford, give
11. display the contents of a file or start an application as on a computer

形容詞 open:

1. affording unobstructed entrance and exit; not shut or closed
   同義詞：unfastened
2. affording free passage or access
3. with no protection or shield
   同義詞：exposed
4. open to or in view of all
5. used of mouth or eyes
   同義詞：opened
6. not having been filled
7. accessible to all
8. not defended or capable of being defended
   同義詞：assailable, undefendable, undefended
9. (of textures) full of small openings or gaps
   同義詞：loose
10. having no protecting cover or enclosure
11. (set theory) of an interval that contains neither of its endpoints
12. not brought to a conclusion; subject to further thought
    同義詞：undecided, undetermined, unresolved
13. not sealed or having been unsealed
    同義詞：opened
14. without undue constriction as from e.g. tenseness or inhibition
15. ready or willing to receive favorably
    同義詞：receptive
16. open and observable; not secret or hidden
    同義詞：overt
17. not requiring union membership
18. possibly accepting or permitting
    同義詞：capable, subject
19. affording free passage or view
    同義詞：clear
20. openly straightforward and direct without reserve or secretiveness
    同義詞：candid, heart-to-heart
21. ready for business

1. Another supermarket opened last week.
   上星期又有一家超級市場開張了。
2. Don't lay yourself open to attack.
   不要讓自己輕易受人攻擊。
3. I'm not convinced your idea will work, but I'll keep an open mind for the moment.
   我還沒想通是否你的意見可行，不過我先考慮一下。
4. The library is open from 9 to 6.
   那個圖書館從上午9點到下午6點開放。
5. He has an open mind in this matter.
   他在這個問題上虛懷若谷。
6. You may open a current account at a bank.
   你可以在銀行開立一個活期帳戶。

o.pen

adj.（形容詞）

Affording unobstructed entrance and exit; not shut or closed.
開著的：沒有障礙的進口和出口；沒關的
Affording unobstructed passage or view:
通行無阻的：沒有柵欄、界限或其它限制性邊界的：
例句：
open waters; the open countryside.
開放的海域；開闊的村莊

Having no protecting or concealing cover:
沒遮蓋的：無保護的或無遮掩的：
例句：
an open wound; an open sports car.
沒有包扎的傷口；敞篷跑車

Completely obvious; blatant:
顯著的；露骨的：
例句：
open disregard of the law.
公然藐視法津

Carried on in full view:
公開的：
例句：
open warfare; open family strife.
公開的斗爭；公開的家庭糾紛

Not sealed or tied:
未封上的：
例句：
an open package.
未封上的包裹

Spread out; unfolded:
打開的，未封住的：
例句：
an open book.
攤開的書

Having interspersed gaps, spaces, or intervals:
有空隙的；有間隔的：
例句：
open ranks; an open weave.
松散的隊伍；織孔粗的編織

Accessible to all; unrestricted as to participants:
公開的，沒有限制的：
例句：
an open competition.
公開賽

Free from limitations, boundaries, or restrictions:
不受限制的：
例句：
open registration.
自由登記

Enterable by registered voters regardless of political affiliation:
可自由參加的：不受政治因素干擾，通過民主投票產生的：
例句：
an open primary.
民主選舉

Lacking effective regulation:
缺乏有影響力的管束的：
例句：
an open town in which gambling predominated.
準許賭賻的城市

Not legally repressed:
不受法律約束的：
例句：
open drug trafficking.
合法的毒品交易

Susceptible; vulnerable:
對…敏感的，易受攻擊的：
例句：
open to interpretation; an issue that is open to question.
對翻譯較敏感的；易引起爭議的提議

Willing to consider or deal with:
待考慮或解決的：
例句：
open to suggestions.
廣納建議

Available; obtainable:
可利用的；可取得的：
例句：
The job is still open.
職位仍然空缺著

Available for use:
隨時可用的：
例句：
an open account; the only course open to us.
活期的資金；我們唯一可用的途徑

Ready to transact business:
營業(yè)中的：
例句：
The store is open.
這家商店正在營業(yè)

Not engaged or filled:
空閑的，未滿的：
例句：
has an open hour for emergency cases.
有一個小時空閑處理緊急事件

Not yet decided; subject to further thought:
懸而未決的，仍需要考慮的：
例句：
an open question.
懸而未決的問題

Characterized by lack of pretense or reserve; candid:
毫無保留的，坦率的：
例句：
Please be open with me.See Synonyms at frank
請對我坦白參見 frank

Free of prejudice; receptive to new ideas and arguments:
沒有偏見的：心平氣和地對待新觀點和爭論的：
例句：
She listened to the proposal with an open mind.
她以無私的態(tài)度聽取這項方案

Generous:
大方的，慷慨的：
例句：
He is very open with his time.
他非常樂意貢獻自己的時間

Printing
【印刷術】
Widely spaced or leaded. Used of typeset or other printed matter.
有空格的，有間隔的：行距寬的，用于打字或打印
Having constituent elements separated by a space in writing or printing:
字間有空格的：在寫作或打印中字間有空格的：
例句：
The wordsea gull is an open compound.
這個字海歐 是中間有空格的復合詞

Music
【音樂】
Not stopped by a finger. Used of a string or hole of an instrument.
不用手指按壓的：不用手指按住而通過弦或小孔結束的
Produced by an unstopped string or hole or without the use of slides, valves, or keys:
空弦所產生的：
例句：
an open note on a trumpet.
小喇叭的空音

Played without a mute:
不以弱音演奏的：
例句：
an open wind instrument.
不以弱音演奏的樂器

Articulated with the tongue in a low position, as the vowel infar.
以低音調發(fā)音的，象far 中的元音
Ending in a vowel or diphthong:
以元音或雙元音結尾的：
例句：
an open syllable.
以元音結尾的音節(jié)

Designating a method of punctuation in which commas and other marks are used sparingly.
少用標點符號的：在不引起混淆的情況下可能時省略逗號和其他符號的
Being in operation; live:
運轉中的，活生生的：
例句：
an open microphone.
正使用的麥克風

New England Clear. Used of weather.See Regional Note at fair
【新英格蘭】 用于表示天氣晴朗的參見 fair
Electricity Containing a gap across which electricity cannot pass.
【電學】 短路的
Mathematics
【數(shù)學】
Of or relating to an interval containing neither of its endpoints.
不包含前后兩點的
Of, relating to, or being a set such that at least one neighborhood of every point in the set is within the set.
開集合的：指集合中的每一個點都有一個鄰域，而且這些點全部在此集合中的
Of, relating to, or being a set that is the complement of a closed set.
余集合的
v.（動詞）
o.pened,o.pen.ing,o.pens
v.tr.（及物動詞）
To release from a closed or fastened position.
打開：從關閉的或固定的位置上移開
To remove obstructions from; clear.
除去，除掉，弄干凈
To make or force an opening in:
切開，使暢通：
例句：
open an old wound.
切開舊傷口

To form spaces or gaps between:
區(qū)隔，間隔：
例句：
soldiers opening ranks.
士兵們錯開隊伍

To remove the cover, cork, or lid from.
從…上揭開蓋子，瓶塞
To remove the wrapping from; undo.
打開…的包裝；解開
To unfold so that the inner parts are displayed; spread out:
打開：打開使里面的內容表現(xiàn)出來；傳播開來：
例句：
open a newspaper.
攤開或鋪開一張報紙

To get (something) going; initiate:
舉行，推動：
例句：
open a campaign.
舉行一場運動

To commence the operation of:
開張，營業(yè)：
例句：
open a new business.
開始新的事業(yè)

Games To begin (the action in a game of cards) by making the first bid, placing the first bet, or playing the first lead.
【游戲】 叫牌，下財注，先出牌：在一種游戲的一圈或一盤的開始，叫牌，下財注，或先出牌
To make available for use:
開放：
例句：
opened the area to commercial development.
開放這個區(qū)域作為商業(yè)發(fā)展之用

To make more responsive or understanding.
使（心靈）更易接受…
To reveal the secrets of; bare.
泄密，表示心意
Law To recall (an order or a judgment) for a reexamination of its merits.
【法律】 撤消：（命令、審判）以便重新評估其是非曲折
v.intr.（不及物動詞）
To become open:
使打開：
例句：
The door opened slowly.
這扇門慢慢地打開了

To draw apart; separate:
分開，分離：
例句：
The wound opened under pressure.
傷口因受力裂開了

To spread apart; unfold.
打開，散開
To come into view; become revealed:
展示，顯現(xiàn)：
例句：
The plain opened before us.
一望無際的平原展現(xiàn)在我們面前

To become receptive or understanding.
（心靈）變得更容易接受…

To begin; commence:
開始，創(chuàng)始：
例句：
The meeting opened with a call to order.
這個會議是為了討論社會治安而召開

To begin business or operation.
開始做生意或開始生產
To give the first public performance:
首次公開演出：
例句：
The play opens next week.
這出戲劇將于下星期公開演出

Games To make a bid, bet, or lead in starting a game of cards.
【游戲】 第一個叫牌，第一個下注，第一個打牌
To give access:
通往：
例句：
The room opens onto a terrace.
這個房間通往陽臺

n.（名詞）
An unobstructed area of land or water.
不設防的疆域或水域
The outdoors:
戶外：
例句：
camping in the open.
露天宿營

An undisguised or unconcealed state:
坦然；公開：
例句：
brought the problem out into the open.
把這個問題拿出公開討論

Sports Games A tournament or contest in which both professional and amateur players may participate.
【體育運動】 【游戲】 公開賽：專業(yè)和業(yè)余選手均可參加的比賽或錦標賽

<常用詞組>open up
To spread out; unfold:
展開；攤開：
例句：
A green valley opened up before us.
青翠的山谷展現(xiàn)在我們眼前

To begin operation:
開始運作：
例句：
The new store opens up next month.
這家新商店將在下個月開張

To begin firing:
開戰(zhàn)；開火：
例句：
The artillery opened up at dawn.
炮兵于拂曉時開口

Informal To speak freely and candidly:
【非正式用語】 直言不諱：
例句：
At last the frightened witness opened up and told the truth.
這名嚇壞了的目擊者終于直言不諱說出了事實

To make an opening in by cutting:
切開：
例句：
The surgeon opened up the patient`s chest.
這名外科醫(yī)生切開了病人的胸部

To make available or accessible:
使可利用；使通往：
例句：
open up new markets.
打開了新的市場

Informal To accelerate. Used of a motor vehicle.
【非正式用語】 （用于汽車）加速
<習慣用語>open fire
To begin firing on.
開火
open (one`s) eyes
To become aware of the truth of a situation.
使看清事實真相
來源：
Middle English
中古英語
from Old English * see upo
源自 古英語 *參見 upo

【引伸】
o.penly
adv.（副詞）
o.penness
n.（名詞）