这场讨论并非由学校安排,而是学生自发组织起来的。Zhè chǎng tǎolùn bìngfēi yóu xuéxiào ānpái, ér shì xuésheng zìfā zǔzhī qǐlái de.This discussion was not arranged by the school; rather, it was organised spontaneously by the students.
灾后居民自发成立了志愿小组,帮助清理街道。Zāihòu jūmín zìfā chénglì le zhìyuàn xiǎozǔ, bāngzhù qīnglǐ jiēdào.After the disaster, residents spontaneously set up a volunteer group to help clean the streets.
音乐会结束时,全场观众自发站起来鼓掌。Yīnyuèhuì jiéshù shí, quánchǎng guānzhòng zìfā zhàn qǐlái gǔzhǎng.When the concert ended, the whole audience spontaneously stood up and applauded.