xiǎohuá ná zhe shū zǒu dào jièshū jīqián ， bǎ jièshūzhèng fàngzài jīqì shàng ， zài bǎ shū fàngshàngqù 。

小华拿着书走到借书机前，把借书证放在机器上，再把书放上去。

Xiaohua carried the book to the borrowing machine, placed her library card on it, and then put the book on it.