a fount of wisdom的用法和样例：
- That old man is a fount of wisdom.
- The old man is a fount of wisdom.
- Mother had always been just as she was, a pillar of strength, a fount of wisdom, the one person who knew the answers to everything.
- Her speeches have ever been a fount of inspiration to her audiences.
- That old man is a fount of wisdom
- Modern life is a fount of as-if technologies.