Soft cover意思

"Soft cover" is a term used to describe books that are bound with a flexible material, typically paper or a paper-like substance, as opposed to hardcover books, which are bound with a stiff material like cardboard or hard paper. Soft cover books are also known as paperbacks, and they are generally less expensive and more portable than hardcover books. They are popular for mass-market paperback editions, textbooks, and books that are intended to be read once and then discarded.