开关

• 拼音: kāi guān
• 汉字拆解: 开 = 一 + 廾, to open; 关 = 丷 + 天, to close (simplified from 關)

含义

Switch; power button. A device for turning something on or off.

Refers to physical switches for lights, appliances, or machinery. Can also mean the action of switching on/off. Common phrases: 电灯开关 (light switch), 总开关 (main switch), 开关按钮 (on/off button). Used both literally and occasionally metaphorically.

例句

1. 墙上的开关坏了，灯一直打不开。
2. 离开房间前记得把所有电器的开关都关掉。
3. 这台机器的开关在侧面，你找找看。

用法指南

语境: everyday, technical, home

语气: practical

正确说法

• 开关在哪儿？(Where's the switch?)
• 按一下开关就行了。(Just press the switch.)

错误说法

• 混淆开关和按钮 (开关 typically toggles between two states; 按钮 is a general button that may have various functions)

起源与历史

Compound of 开 (to open/turn on) + 关 (to close/turn off). The two actions combined describe what a switch does.

文化背景

世代: All ages

社会背景: Universal