Subject + 退出 + Organization/Activity
退出 (tuìchū) means 'to withdraw from,' 'to quit,' or 'to exit' a group, organization, or activity. It emphasizes the act of leaving or pulling out of something one was previously part of.
他因为个人原因退出了比赛。
Tā yīnwèi gèrén yuányīn tuìchū le bǐsài.
He withdrew from the competition due to personal reasons.
那个国家去年退出了这个国际组织。
nàge guójiā qùnián tuìchūle zhège guójì zǔzhī.
That country withdrew from this international organization last year.
她决定退出学生会,把时间用在学习上。
tā juédìng tuìchū xuéshēnghuì, bǎ shíjiān yòng zài xuéxí shàng.
She decided to quit the student council and spend her time on studying.