键 🔊

网络内容摘要 (Web Content Summary):

核心含义与起源：“键”最初指贯穿鼎耳（古代锅、鼎上用来提鼎的地方）的金属横杠，用于提举鼎器。也指垂直插在门栓里的金属棒，有“锁门”或“闭合”的功能。字形采用“金”为偏旁，表示与金属有关，“建”为声旁。 Main meaning & origin: The character “键” originally referred to a metal bar passing through the ears of a cauldron (ding) for lifting it. It also means a metal bolt inserted into a door bar, serving a locking or closing function. The radical “金” means “metal,” and the phonetic is “建.”

文化背景与有趣点：“关键”一词来源于鼎的键－没有这个横杠，鼎无法被提起。由此引申“关键”表示决定性或最重要的因素。这一字也和门、车等器物的“锁定”“紧固”功能有关。 Cultural background & interest: The word "关键" (key/crucial) comes from this usage—without the “键,” the cauldron can't be lifted, symbolizing something essential or decisive. The idea connects to locking or securing doors and other objects like carts.

• 易混淆点：“键”常与“件”（piece）、“间”（space/time）等形近字混淆。“键”与“锁”在功能上相关，但含义有区分。 Common confusions: "键" is often confused with similar-looking characters like "件" (item/piece) or "间" (interval/space). It's related to "锁" (lock) in function but has a different meaning.
• 常用词：“关键”（crucial, key point）、“键闭”（to lock/bolt）、“按键”（key/button, like on a keyboard）。 Useful words: 关键 (key, crucial), 键闭 (to bolt/lock), 按键 (button/key, as on a keyboard).

成语与应用：“掌授管键，以启闭国门”指管理国家门锁之责，引申为掌握关键权力。现代常用“关键时刻”比喻重要时刻。 Idioms & usage: “掌授管键，以启闭国门” refers to the responsibility of controlling access (like holding power). In modern usage, "关键时刻" means a critical moment.