Usage note
发出可以用来描述各种事物的发送或释放，比如声音、气味或者信息。
fāchū kě yǐ lái gōu miáo zhēng jué zá róng wù de fānɡ sòng huò bō shì, bǐ 如 声 音 、 气 味 或 者 信 息 。
发出 can be used to describe the sending or release of various things, such as sounds, smells, or information.
Context note
这个词常用于描述自然现象，如动物的叫声、植物散发出的香气，或者电子设备发送的信息。
zhè gè cí cháng yòng lái miáo zhēng zì rán xiàng xiàn ，rú dōng wù de shēnɡ jiào 、 zhí wù sàn fā chū de qì xiāng ， huò zhě diàn lǐ bèiè fā shēnɡ de xìn xī 。
This word is often used to describe natural phenomena, such as animal sounds, the scent of plants, or information sent by electronic devices.
5 examples
手机发出声音。
shǒu jī fā chū shēng yīn。
The phone emits a sound.
花朵发出香味。
huā duǒ fā chū xiāng wèi。
The flower gives off a fragrance.
他发出信息给朋友。
tā fā chū xìn xī gěi péng yǒu。
He sent a message to his friend.
电视发出光亮。
diàn shì fā chū guāng liàng。
The TV emits light.
蜡烛发出火焰。
là zhú fā chū huǒ yàn。
The candle produces flames.
5 mini stories
晚上，小猫发出了叫声。妈妈知道是它饿了。
wǎn shàng， xiǎo māo fā chū le jiào shēng。 mā ma zhī dào shì tā è le。
At night, the kitten made a sound. Mom knew it was hungry.
花园里，花儿发出香味吸引蜜蜂。
huā yuán lǐ， huā ér fā chū xiāng wèi xī yǐn mì fēng。
In the garden, flowers emit fragrance to attract bees.
爸爸发出了信息给同事。工作进展顺利。
bà ba fā chū le xìn xī gěi tóng shì。 gōng zuò jìn zhǎn shùn lì。
Dad sent a message to his colleague. The work is going smoothly.
电视发出声音，吵醒了正在睡觉的弟弟。
diàn shì fā chū shēng yīn， chǎo xǐng le zhèng zài shuì jiào de dì di。
The TV emitted sound, waking up the sleeping brother.
蜡烛发出火焰照亮了整个房间。
là zhú fā chū huǒ yàn zhào liàng le zhěng gè fáng jiān。
The candle produced flames and illuminated the entire room.
Mini dialogue
手机的声音
A
你的手机发出了什么声音？
Nǐ de shǒujī fāchū le shénme shēngyīn?
What sound did your phone make?
B
它发出了闹钟的声音。
Tā fāchū le nàozhōng de shēngyīn.
It made an alarm sound.
小猫在哪儿
A
你听到小猫发出的叫声了吗？
Nǐ tīngdào xiǎo māo fāchū de jiàoshēng le ma?
Did you hear the sound the kitten made?
B
听到了，它从沙发后面发出的。
Tīngdào le, tā cóng shāfā hòumiàn fāchū de.
Yes, it came from behind the sofa.
Related words and contrasts
similar
发送
fāsòng
to send; to transmit
Both mean to send out
opposite
收到
shōudào
to receive
发出 means send out; 收到 means receive