A crowd roaring its disapproval的用法和样例：
- Cotto blasted Jennings around the ring in the fourth round, putting him down twice as the crowd roared its approval.
- An appreciative crowd roared its approval, and as the national anthem was sung, the event seemed to recall the past greatness of the Mongolian nation.
- The angry crowd howled its disapproval.
- He headed a crowd off from the wrong exit.