I'm leading up to something quite important.

我正要说到很重要的事情上。

《柯林斯英汉双解大词典》

He described the sequence of events leading up to the robbery.

他描述了抢劫案发生前的一系列有关情况。

《牛津词典》

My vote for the most important cities in the world in the period leading up to 2000 B.C. would be Ur, Iraq.

我认为在公元前2000年之前的世界上最重要的城市是伊拉克的乌尔。

youdao

Warmer than average temperatures and lack of snow have been major concerns in the weeks leading up to the games.

VOA: special.2010.02.10

On the stair leading up into the disinfectant-smelling twilight of a rooming house, she saw an old man huddled, shaking with grief she couldn't hear.

登上梯子，在一间散发着,消毒水气味的昏暗公寓里，她看到了一个老人缩成一团，以一种他无法感受的哀伤颤抖着。

耶鲁公开课 - 1945年后的美国小说课程节选

but they have trails leading up to the point.

但是他们有通往那里的道路。

圣莫尼卡之景点 - SpeakingMax英语口语达人

Many tour operators and hotels are hosting William-and-Kate related activities leading up to the affair.

BBC: Going to London for the royal wedding

They listened as prosecutor Jonathan Ashley-Norman described the moments leading up to the incident on 3 December 2005.

BBC: Network Rail fined ?1m over girls' level crossing deaths

Eleven million schoolchildren participated in preliminaries leading up to the national contest this week.

CNN: New York eighth-grader wins national spelling bee