步行竞赛

例句：

1. 1. He has a great ambition to become a successful entrepreneur.
   他有一个成为成功企业家的伟大抱负。
2. 2. Her ambition is to become a doctor and help people.
   她的抱负是成为一名医生，帮助人们。
3. 3.His ambition was to make it big in the business world.
   他的抱负是在这个商业世界取得成功。