a few hours的用法和样例：
- It's easy to while a few hours away in a museum.
- She learned her lines in a few hours.
- He finished the work, and that in only a few hours.
- I'd like a few hours of quiet after the day's work.
- The cement will set in a few hours.
- Some insects have a life-span of no more than a few hours.
a few hours的相关资料：