自发

gāi kē yán xiǎo zǔ shì tā men zì fā zǔ zhī de

该科研小组是他们自发组织的。

They launched this scientific research group by themselves.

bà gōng shì zì fā de

罢工是自发的。

The strikes were spontaneous.

rén qún zì fā huān hū

人群自发欢呼。

The crowd gave a spontaneous cheer.

zì fā dòu zhēng

自发斗争

spontaneous struggle

zì fā yùn dòng

自发运动

wildcat movement

zì fā guò chéng

自发过程

spontaneous process

zì fā qīng xiàng

自发倾向

spontaneous trend

zì fā lì liàng

自发力量

spontaneous forces

zì fā rán shāo

自发燃烧

spontaneous combustion