a dismal rainy day的用法和样例：
- The last dramatic meeting of the X club was held on a dismal rainy night.
- Commend me to a leaky house on a rainy day.
- He is planed to amass a fortune for a rainy day.
- We'd better make preparations against a rainy day.
- He must have a screw loose, having a picnic on such a rainy day.