a cheap paperback的用法和样例：
- The publisher proposed to do both a hardback and a cheap paperback edition.
- He is said to be a cheap skate and nobody likes to help him.
- That was a cheap shot. You know it isn't true.
- It's no longer possible to find a cheap flat in central London.
- This is not the original; it's only a cheap reproduction.
- This photograph was taken with a cheap camera.