a young harum-scarum的用法和样例：
- He has grown into a young man of twenty-two.
- He was known to be a young man with lofty ideals.
- The chief conductor turned out to be a young woman.
- He looks to be a young man of twenty.
- A young swan is called a cygnet.
- Harum Scarum was the biggest,baddest,hairiest,scariest wolf in the city,and he loved fo frighten people!