到了那时候，读者要续借图书或归还资料，只要通过自设的用户名和密码登录图书馆的任何一台电脑即可。
From then on, when they sign-in to a computer in the library, renew a book, or check-out materials, they would be using the username and password that they created.
要到图书馆去续借几本书。
你(5)必须按时归还图书。如果你想借阅更长时间，你(6)不得不续借它们。
You (5) return the books on time. If you want to keep them longer, you (6) renew them.
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