扩散

• 拼音: kuò sàn
• 汉字拆解: 扩 = 扌(hand) + 广 (wide) — expand; 散 = 攵 (strike) + components — scatter

含义

To spread; to diffuse; to proliferate. The outward spreading of something.

Used in scientific contexts for diffusion of particles, gases, or liquids. Also used more broadly for the spread of information, disease, influence, or conflict. A neutral term that can describe both positive and negative spreading.

例句

1. 病毒正在以惊人的速度扩散。
2. 香味从厨房扩散到整个房子。
3. 谣言在网上迅速扩散开来。

用法指南

语境: science, news, disease, information

语气: descriptive

正确说法

• 请不要让这个消息扩散出去。(Please don't let this news spread.)
• 核辐射扩散到了周边地区。(Nuclear radiation spread to surrounding areas.)

错误说法

• 用扩散描述有目的的传播活动。(扩散 implies natural or uncontrolled spreading — use 传播 or 推广 for deliberate dissemination)

起源与历史

Compound of 扩 (expand) + 散 (scatter). Literally 'expand and scatter.'

文化背景

世代: All ages

社会背景: Universal