There are 45 books in the corner. What do you mean?
There are 45 books in the corner, which means that 45 books were used in the activity. The book corner is a reading activity organized by the class to build a scholarly campus, create an ideal cultural and ecological environment for students' growth, further promote the construction of a civilized and ceremonial campus, know how to care for books, stimulate reading enthusiasm, and create a scholarly atmosphere.