a store of food的用法和样例：
- She keeps a store of amusing story in her head.
- If a person has a store of food,he has it in his power to consume it himself in idleness,or in feeding others to attend on him,or to fight for him,or to sing or dance for him.
- She keep a store of amusing story in her head.
- To reduce or eliminate a store of nuclear weapons.
- I always keep a store of envelope ready in my desk.