1 ambitious (to be/do sth) having a strong desire to be successful, to have power, etc 有雄心的；野心勃勃的: I'm not particularly ambitious -- I'm content with my life the way it is. 我并不特别有野心，而是满足于现状。We are ambitious to succeed. 我们决心要取得成功。

2 difficult to achieve or do because it takes a lot of work or effort 难度大的；远大的: The company have announced ambitious plans for expansion. 公司宣布了宏伟的扩展计划。