We talked for hours and hours.

我们谈了好多个小时。

《柯林斯英汉双解大词典》

The report lasted hours and hours.

报告连续了多个小时。

youdao

I've got hours and hours of homework, Mummy.

妈妈，我已经做了好几个小时的作业了。

youdao

Business students spend hours and hours learning how to write a business plan.

VOA: special.2009.06.26

we spend hours and hours and hours working,

我们都要花很长的时间来准备，

I can't help but 实战 - SpeakingMax英语口语达人

Another value for community learning we set up to have office hours, synchronized office hours, with the students and the professor.

学习社群的另一个价值,在于给学生和教授，制定办公时间，有规律的办公时间。

麻省理工公开课 - 媒体、教育、市场课程节选

Then they waited hours and hours, sometimes days, for news of their loved ones.

BBC: Basle air crash: The mothers who never came home

It was a largely minority crowd, a lot of African-Americans waiting hours and hours to vote.

NPR: California Gay Leaders Assess Marriage Defeat

Just think - hours and hours of really good kids' programmes from the BBC.

BBC: CBBC and CBeebies: Your views