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IELTS BNC: 1267 COCA: 1093

key noun [ C ] LOCK

A1 a piece of metal that has been cut into a special shape and is used for opening or closing a lock, starting a car engine, etc.钥匙

car/door keys车/门钥匙

More examples

She fumbled around in her handbag, looking for her key.

I heard someone turn a key in the lock.

Give me the car keys - you're in no fit state to drive.

She suddenly remembered (that) her keys were in her other bag.

Please hand in your keys at reception on your departure from the hotel.

key noun [ C ] PART

B2 any of the set of moving parts that you press with your fingers on a computer keyboard, or musical instrument to produce letters, numbers, symbols, or musical notes(计算机、打字机或乐器的)键

Examples

If you press this key, the computer screen will clear .

Press and hold down the control key while you press '9'.

Press the return key twice to leave a blank line.

Use this key to toggle between the two typefaces.

He ran his fingers over the piano keys.

key noun [ C ] MUSICAL NOTES

a set of musical notes based on one particular note调,主音

The song changes key halfway through.歌曲在中间部分调子变了。
the key of C minorC小调

key noun [ C ] SYMBOLS

a list of the symbols used in a map or book with explanations of what they mean(地图、书等的)符号说明,图例

key noun [ C ] ANSWERS

A2 a list of the answers to the questions in an exercise or test(练习或考试的)问题答案

See the key to test 3 on page 176.在176页可以找到测试三的答案。
keyadjectiveuk/kiː/ us/kiː/

B2 very important and having a lot of influence on other people or things极重要的,关键性的

She was a key figure in the international art world.她是国际艺术界的重要人物。
a key factor in tackling the problem解决问题的关键因素

More examples

I think there is one key fact that you have overlooked.

The key witness for the prosecution was offered police protection after she received death threats.

The control of inflation is a key component of the government's economic policy.

Delegation of responsibility is a key part of a manager's job.

The economy is regarded as the key factor which will determine the outcome of the general election.

to intentionally damage a car by scratching its paint using a key故意用钥匙刮花一辆车

Someone keyed his Porsche.有人挂花了他的保时捷。

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