发出

• 拼音: fā chū
• 汉字拆解: 发 = simplified from 發, meaning to emit; 出 = pictograph suggesting going out from an enclosure

含义

To emit; to send out; to issue. Used when something is released or produced outward, such as sound, light, or a signal.

Used for physical emissions like sound (发出声音), light (发出光), smell (发出气味), as well as abstract actions like issuing an invitation (发出邀请) or sending a signal (发出信号).

例句

1. 那只小猫发出了很小的叫声。
2. 公司向所有客户发出了活动邀请。
3. 这朵花发出了很好闻的香味。

用法指南

语境: everyday, formal, description

语气: neutral

正确说法

• 他发出了一声叹气。(He let out a sigh.)
• 学校发出了放假通知。(The school issued a holiday notice.)

错误说法

• 我发出了一个快递 (For sending a package, use 寄出 or 发 rather than 发出 — 发出 is better for sounds, signals, or announcements)

起源与历史

Compound of 发 (to send, emit) and 出 (out, exit), together meaning to send or release outward.

文化背景

世代: All ages

社会背景: Universal