这是他们迄今为止最雄心勃勃的项目。

This is their most ___ambitious project to date.

该公司宣布了一项雄心勃勃的五年扩张战略。

The company announced an ___ambitious five-year expansion strategy.

完成如此雄心勃勃的目标需要巨大的努力和资源。

Accomplishing such ___ambitious goals requires tremendous effort and resources.