平装本

例句：

1. 1. I bought a new book in the paperback edition.
   我买了一本新书，是平装版。
2. 2. The library has a lot of books available in both paperback and hardcover.
   图书馆有大量书籍，既有平装版也有精装版。
3. 3. She prefers reading books in paperback because it's more affordable.
   她更喜欢买平装版书，因为更便宜。