a rude awakening的用法和样例：
- I had a rude awakening when I found myself on the verge of bankruptcy.
- The older generation had a rude awakening.
- Pikas get a rude awakening from their long hibernation.
- The discovery that her husband had an extramarital affair was a rude awakening.
- Emma suffered a rude awakening when Mr. Elton, finding her alone, asked her to marry him.