a prize example的用法和样例：
- They had set a prize of 2000 gns for the horserace.
- A prize of 50 is not to be sneezed at.
- There was a prize for the best essay on Shakespeare in the city.
- I'm bound to win a prize eventually, I'm just biding my time.
- The child is given a prize as a sop to her disappointed parents.
- She always makes a mess of things; she's a prize idiot.