a long memory的用法和样例：
- He had a long memory for people who had disappointed him.
- Atlanta had a long memory and was suspicious and slow to change.
- She had a long memory.
- In the calm warm evocation of a long memory, but also the feelings of a stretch of the elegant tastes of life.
- There was a long lag in forwarding mail to us.
- Fruit juices ferment if they are kept a long time.