键

• 拼音: jiàn
• 汉字拆解: 键 = 钅(metal) + 建 (establish), originally meaning a metal bolt or key

含义

Key (on keyboard/piano); bond (chemistry). A button or chemical connection.

Most commonly refers to keys on keyboards, pianos, or other devices. In chemistry, refers to atomic bonds. Appears in compounds like 键盘 (keyboard) and 按键 (button/key).

例句

1. 按下回车键就可以提交表单了。
2. 钢琴有八十八个黑白键，需要大量练习才能弹好。
3. 化学老师讲解了碳原子之间形成共价键的原理。

用法指南

语境: technology, music, chemistry

语气: technical

正确说法

• 按哪个键？(Which key should I press?)
• 空格键在最下面。(The space bar is at the bottom.)

错误说法

• 门的键坏了 (For door keys, use 钥匙 — 键 is for buttons/keys on devices)

起源与历史

Originally referred to a bolt or bar for locking, extended to mean keys on instruments and keyboards.

文化背景

世代: All ages

社会背景: Universal