a sumptuous feast的用法和样例：
- His friend treats him to a sumptuous feast.
- The distinguished guests are served with a sumptuous feast.
- Later, he thoroughly enjoyed a sumptuous feast at our booth and left contented.
- Surendra entertained the Master and the devotees with a sumptuous feast.
- It's indeed a great treat for the mouth to have such a sumptuous feast.