key的常用短语是：用作名词(n.)get〔have〕 the key to the door到达法定年龄 reach the age of majority。key的词语用法是n.(名词)key是可数名词,基本意思是开房门、箱子等和上钟表发条等的“钥匙”,引申可表示解决事件或问题等的“关键,线索,秘诀,解法,答案”等,其前用定冠词,其后常接介词to〔of〕引起的短语作定语。key名词复数:keys；过去式:keyed；过去分词:keyed；现在分词:keying；第三人称单数:keys。
一、详尽释义点此查看key的详细内容
二、双解释义
三、词典解释
1.钥匙
Akey 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.
key是什么意思
e.g. They put thekey in the door and entered...
他们用钥匙打开门进去了。
e.g. She reached for her coat and car keys.
她伸手拿外套和汽车钥匙。
2.（计算机或打字机的）键
Thekeys on a computer keyboard or typewriter are the buttons that you press in order to operate it.
3.（钢琴或风琴的）键
Thekeys of a piano or organ are the long narrow pieces of wood or plastic that you press in order to play it.
4.（音乐的）调
In music, akey is a scale of musical notes that starts on one specific note.
e.g. ...thekey of A minor.
A小调
5.（地图、图解或科技书籍的）略语表，符号表，凡例
Thekey on a map or diagram or in a technical book is a list of the symbols or abbreviations used and their meanings.
key
e.g. You will find akey at the front of the book.
你会在书的前面找到略语表。
6.最重要的；关键的
Thekey person or thing in a group is the most important one.
key的近义词
e.g. He is expected to be thekey witness at the trial...
他将成为审判的关键证人。
e.g. Education is likely to be akey issue in the next election.
在下届选举中教育可能成为最重要的一个议题。
7.关键；要诀
Thekey to a desirable situation or result is the way in which it can be achieved.
e.g. Thekey to success is to be ready from the start...
成功的关键在于从一开始就要准备充分。
e.g. Diet and relaxation are two important keys to good health.
限制饮食和放松身心是保持健康的两个要诀。
8. see also: master key
under lock andkey -> see lock
相关词组：key in
四、例句
He is striking the key of his typewrite.
他敲打着打字机的字键。
To exit from this page, press the return key.
退出本页面按返回键。
The key here is to set up a responsibility system.
关键是建立责任制。
This was the key to success of our initial talks.
这就是我们当初会谈取得成功的关键所在。
The key to an entertainer's success is personality.
一个演员成功的关键在于他是否有个性。
I have mislaid my key to the door.
我不知道把门钥匙放到哪里了。
She inserted the key into the lock.
她把钥匙插入锁中。
Do you know the key to the question?
你知道问题的答案吗?
They zeroed in on the key issues.
他们集中讨论了关键问题。
The key factor to success is hard work.
成功的关键因素是努力工作。
He is a key witness in this case.
在这个案件中，他是一个主要见证人。
This is a key feature of our society.
这是我们社会的一个主要特点。
We must take firm hold the key link of our work.
我们要牢牢抓住工作的主要环节。
She keyed in all the new data.
她键入了所有的新数据。
I've keyed this sentence (in) three times, and it's still wrong!
我把这个句子输入了三次，可是仍然不对！
To make matter worse, I locked my key in the car.
更糟的是，我把钥匙锁在车里了。
Keeping an extra key in a coat pocket may assist drivers who lock their keys in their cars during a chaotic situation.
在外衣兜里留一把另外的钥匙对在混乱情况中将其钥匙锁在车内的司机来可能是有帮助的。
Please key the piano up to concert pitch.
请调高钢琴的音,达到合奏的音调。
五、常用短语
They tried to key the programme to a younger audience.
他们努力使这个节目适合比较年轻的观众。
The farm was keyed to the needs of the local people.
农场按当地人的需要作了调整。
Their new factories are keyed to produce the things that their army needs.
他们把新工厂设计成适合军工生产的地方。
This piano wants keying up.
这架钢琴需要调音。
key sth upThey keyed a piano up to concert pitch.
他们把钢琴的音调升高到音乐会的高音标准。
key sb ⇔ upThe thought of the coming expedition to Tibet keyed them up to a high pitch of excitement.
一想到即将去西藏考察,他们都感到极度兴奋。
The coach keyed up the team for the big game.
教练鼓励队员以备大赛。
The crowd was keyed up for the football match.
群众为这场球赛而欢欣。
I was keyed up about the examination.
我因考试而紧张。
The manager warned us not to get too keyed up before the big match.
领队告诫我们在大赛之前不要太激动。
六、经典引文
I tried the lock with one of my own keys, and managed to open the trunk.
出自：A. S. NeillShe has a key and lets herself in.
出自：W. WhartonA..Mustang with the driver's window open and the key in the ignition.
出自：J. GoresLean young skyscrapers..key in with Rome's general virtuosity.
出自：E. Bowen七、词义辨析
key的相关近义词
answer、clue、code、explanation、guide、index、interpretation、lead、means、sign、solution
key的相关临近词
keyboard、Kew、Keya、keys、Keyi、keye、Keyl、keyt、keyb、Keyho、Keyla、keyin