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IELTS BNC: 1267 COCA: 1093
key
kiː ki
Word forms: plural , 3rd person singular present tense keys, present participle keying, past tense , past participle keyed
1 N-COUNT

鑰匙 A key is a specially shaped piece of metal that you place in a lock and turn in order to open or lock a door, or to start or stop the engine of a vehicle. 鑰匙

  • They put the key in the door and entered. [+ in]

    他們用鑰匙打開門進去了。

  • She reached for her coat and car keys.

    她伸手拿外套和汽車鑰匙。

SYN opener, door key, latchkey
2 N-COUNT [usually plural]

（計算機或打字機的）鍵 The keys on a computer keyboard or typewriter are the buttons that you press in order to operate it. （計算機或打字機的）鍵
3 N-COUNT [usually plural]

（鋼琴或風琴的）鍵 The keys of a piano or organ are the long narrow pieces of wood or plastic that you press in order to play it. （鋼琴或風琴的）鍵
4 N-VAR

（音樂的）調 In music, a key is a scale of musical notes that starts on one specific note. （音樂的）調

  • ...the key of A minor. [+ of]

    A小調

SYN tone, sound, pitch, timbre
5 N-COUNT

（地圖、圖解或科技書籍的）略語表，符號表，凡例 The key on a map or diagram or in a technical book is a list of the symbols or abbreviations used and their meanings. （地圖、圖解或科技書籍的）略語表，符號表，凡例

  • You will find a key at the front of the book.

    你會在書的前面找到略語表。

SYN guide, explanation, interpretation, indicator
6 ADJ [ADJ n]

最重要的；關鍵的 The key person or thing in a group is the most important one. 最重要的；關鍵的

  • He is expected to be the key witness at the trial.

    他將成爲審判的關鍵證人。

  • Education is likely to be a key issue in the next election.

    在下屆選舉中教育可能成爲最重要的一個議題。

7 N-COUNT

關鍵；要訣 The key to a desirable situation or result is the way in which it can be achieved. 關鍵；要訣

  • The key to success is to be ready from the start. [+ to]

    成功的關鍵在於從一開始就要準備充分。

  • Diet and relaxation are two important keys to good health.

    限制飲食和放鬆身心是保持健康的兩個要訣。

SYN answer, means, secret, solution
8 See also:

master key  under lock and key→see: lock 
Phrasal verbs:

key in
ThesaurusWord Partnership
Thesauruskey Also look up:
N.

code, explanation, guide 5

ADJ.

critical, important, major, vital 6

Word PartnershipUse key with:
VERB.

turn a key 1

N.

key component, key decision, key factor, key figure, key ingredient, key issue, key official, key player, key point, key question, key role, key word 6

key to success 7

Trends of key
View usage for:All yearsLast 10 yearsLast 50 yearsLast 100 yearsLast 300 years
IELTS BNC: 1267 COCA: 1093
key

noun¹

 1for a door門ADJECTIVE | ... OF KEYS | VERB + KEY | KEY + VERB | PREPOSITION | PHRASES ADJECTIVE➤master, skeleton萬能鑰匙▸➤duplicate, spare配的鑰匙；備用鑰匙▸➤apartment, car, door, house, ignition, room, etc.公寓鑰匙、車鑰匙、門鑰匙、房屋鑰匙、點火開關鑰匙、房間鑰匙等◇She hides a front door key in a flowerpot.她在花盆裏藏了一把前門鑰匙。... OF KEYS➤bunch, ring, set一串／一圈／一套鑰匙◇a large bunch of keys一大串鑰匙◇He fished a ring of keys out of his pocket.他從口袋裏摸出了一串鑰匙。◇a set of car keys一套汽車鑰匙VERB + KEY➤turn轉動鑰匙◇She turned the key in the lock.她轉動鎖孔中的鑰匙。➤insert, put in, slide into插入鑰匙◇I slid the key into the lock and went in.我把鑰匙插入鎖孔，打開門進去了。➤remove, take out拔出鑰匙▸➤use用鑰匙◇She must have used a key to get in.她一定是用鑰匙進來的。➤leave留下鑰匙◇She left a key with the neighbours / neighbors.她留了一把鑰匙在鄰居那裏。➤lock in把鑰匙鎖在裏面◇I'd accidentally locked the keys in my car.我意外地把鑰匙鎖在了車裏。KEY + VERB➤open, unlock用鑰匙打開／開鎖◇You need a key to open the garage.打開車庫要用鑰匙。➤lock用鑰匙鎖上▸➤turn鑰匙轉動◇They heard a key turn in the lock.他們聽到鑰匙在鎖孔中轉動的聲音。➤jangle, jingle鑰匙叮噹作響◇The sound of keys jangling caught her attention.鑰匙叮噹作響的聲音引起了她的注意。PREPOSITION➤with a/the key用鑰匙◇You have to close it with the key.得用鑰匙才能關上。➤key for開⋯的鑰匙◇Robbie didn't have a key for these doors.羅比沒有開這些門的鑰匙。➤key to⋯的鑰匙◇the key to the front door前門鑰匙PHRASES➤get a key cut (BrE) 配鑰匙◇I'll get another key cut so that you can have one.我再去配把鑰匙，這樣你就可以有一把了。
key

noun²

 2on a computer計算機ADJECTIVE | ... OF KEYS | VERB + KEY ADJECTIVE➤Alt, arrow, backspace, control, delete, enter, escape, function, return, shift, etc.替換鍵、箭頭鍵、退格鍵、控制鍵、刪除鍵、回車鍵、退出鍵、功能鍵、返回鍵、轉換鍵等▸➤hot (= a key that you can press to perform a set of operations quickly) , short-cut熱鍵；快捷鍵◇F1 is the short-cut key for calling up help.F1 是查看幫助信息的快捷鍵。... OF KEYS➤row一排鍵◇the top row of keys最上面的那排鍵VERB + KEY➤hit, hold down, press, punch, tap按鍵；按住鍵；輕敲鍵◇Hold down the Alt key while pressing the arrow keys.按箭頭鍵的同時按住替換鍵。➤release鬆開鍵  ➡ topic at computer
key

noun³

 3decisive factor關鍵VERB + KEY | PREPOSITION VERB + KEY➤have, hold是關鍵；起關鍵作用◇First-time voters could hold the key to the election result.第一次投票的人可能會對選舉結果起關鍵作用。PREPOSITION➤key to⋯的關鍵◇Language is the key to understanding those around you.語言是理解周圍人的關鍵。
key

noun⁴

 4in music音樂ADJECTIVE | VERB + KEY | KEY + VERB | KEY + NOUN | PREPOSITION | PHRASES ADJECTIVE➤major, minor大調；小調▸➤high, low高調；低調VERB + KEY➤change變調◇The piece changes key in the middle.這首曲子中間有一次變調。KEY + VERB➤change音調變換◇The key changes from C major to A minor.音調從 C 大調變為 A 小調。KEY + NOUN➤change音調變化➤signature調號PREPOSITION➤in a/the key以⋯調◇What key is it in?這個用什麼調？◇Can we try it in a lower key?我們能用低一點兒的調試試嗎？➤key of⋯調子◇the key of G majorG 大調的調子PHRASES➤a change of key變調
key

noun⁵

 5on a musical instrument樂器ADJECTIVE | VERB + KEY ADJECTIVE➤organ, piano, etc.風琴、鋼琴等琴鍵➤black, white黑鍵；白鍵VERB + KEY➤caress, stroke, touch撫摸／輕撫／觸摸琴鍵➤depress按壓琴鍵
IELTS BNC: 1267 COCA: 1093
key noun
⇨ button 1 (computer/piano keys) ⇨ note (the key of G) ⇨ solution (the key to success)key adj.
⇨ main
IELTS BNC: 1267 COCA: 1093
key
Keys and combinations: bunch, code, combination...
Important thing or detail: feature, priority, element...
Keys on the computer keyboard: Alt key, arrow key, backspace...
Parts of musical instruments: bellows, bow, bridge...
Notes in the musical scale: A, b, bass...
Types of list: a who's who of something, bibliography, blacklist...
Parts of books: acknowledgments, addendum, afterword...
Important: important, major, key...
To use a computer keyboard, mouse or screen: backspace, click, click...

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