未归还

She had borrowed the book from the library, but it was still unreturned.
她从图书馆借了这本书，但还没归还。
The video game was supposed to be returned by yesterday, but it hasn't been yet.
游戏应该在昨天之前归还，但现在还没有。
The deadline for returning the application forms has passed, and I'm afraid none will be accepted now.
提交申请表的截止日期已经过了，恐怕现在没有人会被接受。
It's been months since he borrowed the bike, and it's still unreturned.
他借自行车已经有几个月了，但还没归还。
She forgot to return the rented movie, which resulted in a late fee.
她忘记归还租来的电影，因此产生了滞纳金。
The company policy requires that all equipment be returned within one week after use.
公司政策要求使用后的所有设备必须在一周内归还。
The library fine for unreturned books is quite high, so I'm trying to find them before the end of the month.
未归还图书的图书馆罚款相当高，所以我正在努力在月底前找到它们。
The landlord threatened to charge her rent for the unfurnished apartment until the sofa was returned.
房东威胁要收取她未归还沙发的租金。
The museum has been searching for the missing artifact for years, but it remains unreturned.
博物馆多年来一直在寻找丢失的文物，但它仍未归还。
After realizing she had left her laptop at a friend's house, she immediately asked for its return, fearing it might be unreturned.
意识到自己把笔记本电脑忘在朋友家后，她立即要求归还，担心它可能未被归还。