library card借书证;
borrow借入;lend借出;
keep持有，保管，存放;renew续借;return归还;
overdue 借书逾期;pay a fine 交罚款;
librarian 图书管理员;bookshelf书架;
novel小说;science fiction科幻小说;
magazine杂志; periodical期刊;reference book参考书;