am·bi·tious /æmˈbɪʃəs/
  (a.)有野心的,抱負不凡的,雄心勃勃的
  Am·bi·tious a.
  1. Possessing, or controlled by, ambition; greatly or inordinately desirous of power, honor, office, superiority, or distinction.
  Yet Brutus says he was ambitious,
  And Brutus is an honorable man.   --Shak.
  2. Strongly desirous; -- followed by of or the infinitive; as, ambitious to be or to do something.
     I was not ambitious of seeing this ceremony.   --Evelyn.
     Studious of song, and yet ambitious not to sing in vain.   --Cowper.
  3. Springing from, characterized by, or indicating, ambition; showy; aspiring; as, an ambitious style.
  A giant statue . . .
  Pushed by a wild and artless race,
  From off wide, ambitious base.   --Collins.
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  ambitious
       adj 1: having a strong desire for success or achievement [ant: unambitious]
       2: requiring full use of your abilities or resources;
          "ambitious schedule"; "performed the most challenging task
          without a mistake" [syn: challenging]