a young ambitious self-starter的用法和样例：
- Mistoffelees: A young ambitious magician, who is a great friend of Tugger, and occasionally uses his magical powers to create mischievous acts.
- 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.