Here are some possible solutions:
1. Increase the number of bookshelves: If the library does not have enough bookshelves, consider increasing the number to ensure that each bookshelf has enough labels. In this way, readers can find and return books more conveniently.
2. Standardize the layout of bookshelves: While adding bookshelves, it needs to be arranged in an orderly way. Labels can be arranged according to book classification, alphabetical order or numerical order, which makes it easier for readers to find the books they need.
3. Using digital system to assist marking: Modern libraries often use digital system to manage library books, which can be assisted by placing electronic display screens on each shelf or using other forms of digital systems. Readers can query the location of books through these systems, so as to find the books they need more intuitively.
4. Provide navigation services: set up navigation boards or guide signs in the library to help readers quickly find various book areas and bookshelves. In this way, even if the shelf label is not enough, readers can still find the books they need conveniently.
In a word, the library should pay attention to the setting of bookshelves, ensure their sufficient quantity and standardized layout, so as to enhance the user experience. If there are not enough bookshelves, we can consider increasing the number, using digital system to assist labeling or providing navigation services to solve the problem.