key in
collocation键入；输入
Please key in your password to log in.
请输入密码以登录。
键入；输入
keys — third person singular of key
先理解核心含义，再看它在真实句子里的用法。
键入；输入
to enter (information) by typing on a keyboard or keypad
The guitarist carefully keyed each string to the correct pitch before the performance.
吉他手在演出前仔细地给每根弦调音至正确的音高。
常与 in 连用
给(锁)配钥匙。
To fit (a lock) with a key.
给(机械组件)装键以保持定向。
To fit (pieces of a mechanical assembly) with a key to maintain the orientation between them.
用符号标记或表明类别归属。
To mark or indicate with a symbol indicating membership in a class.
按下(电报键)。
To depress (a telegraph key).
key
Base
原形
keys
3rd person
第三人称单数
keying
-ing
现在分词
keyed
Past
过去式
keyed
Past participle
过去分词
She always keys her notes into the computer.
她总是把笔记输入电脑。
He keyed the door and entered the room.
他用钥匙开了门，走进了房间。
They are keying the data into the system now.
他们正在把数据输入系统。
key作动词时，意为‘用钥匙锁’或‘输入（数据）’，规则变化。
She keyed the door after coming back home late at night.
她深夜回家后用钥匙锁上了门。
The technician is keying the safe to ensure it is secure.
技术员正在锁上保险柜以确保其安全。
Choose the next layer that will help you use keys with more confidence.
Recommended next
Missing: Usage patterns
Complete this area with usage patterns.
Includes Common mistakes & Confusing words
See typical errors learners make and confusing words to avoid.
键入；输入
Please key in your password to log in.
请输入密码以登录。
使…适应；使…针对
She keyed the training to the needs of each employee.
她根据每名员工的需求调整培训。
给锁配钥匙；使锁可使用特定钥匙开启
A locksmith can key the lock to your front door key.
锁匠可以给这把锁配上能开你前门的钥匙。
按下（对讲机的）通话键
Key the microphone only when you are ready to speak.
只有准备好说话时才按下麦克风的通话键。
键入；输入
Just key in your account number and press Enter.
只需输入你的账号并按回车。
使紧张；使兴奋
The news really keyed her up before the interview.
这条消息让她在面试前真的很紧张。
使适应；使配合
The difficulty of the test is keyed to the level of the students.
测试的难度与学生的水平相适应。
Use keys naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象一把钥匙(key)插进锁孔——动词key就是给锁配钥匙；再想想键盘上的key键，key in就是敲入信息。
语域：neutral 常见场景：computing、data entry 作动词表示“用键盘输入”时通常与 in 连用，语气中性，比较常见于电脑操作、填表或软件使用说明等场合；日常口语中也可用 type in 或 enter。
及物动词: 调音，锁上；不及物动词: 使用钥匙
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.