The great ambition is spurring him on.

远大的志向鞭策着他。

It is their great ambition in life.

这是他们人生的伟大抱负。

We have a great ambition;

我们志向远大；

I admire my husband's great ambition.

我很钦佩我丈夫的伟大抱负。

We have great ambition for the future.

我们对于未来有着伟大的理想抱负。