He says his way of teaching can help anyone learn how to read and write with about thirty hours of study.

他说，他的教学方式可以帮助任何人在约30个小时的学习内，学会如何阅读和写作。

youdao

He had not slept or rested, before, for more than thirty hours.

他已经有三十多个小时没有睡觉，也没有休息过了。

youdao

It's twenty-one thirty hours, ie 9.30 pm.

现在是二十一点三十分（晚上）。

youdao

Scientists think the largest dinosaurs would have to have spent thirty hours a day chewing and swallowing their food.

VOA: special.2010.06.04

A studio of three hours' lecture in a large lecture hall, and two hours of recitation in groups of thirty.

在一个大的讲堂的教室里,讲三个小时讲座，并以三十人为一组,进行两小时背诵。

麻省理工公开课 - 媒体、教育、市场课程节选

We can spend late hours rendering something and then have a go-by in thirty seconds.

我们可以用后来的时间,对一些东西做艺术处理,然后跳过这三十秒。

麻省理工公开课 - 媒体、教育、市场课程节选

Given that not all students can participate for thirty hours each week due to having part-time jobs or family responsibilities, the flexibility at CECAP appeals to students who were unable to cope with the strict nature of the formal education system.

UNESCO: Country Profile: Uruguay

Thirty-five hours only gets you to Wednesday night in Silicon Valley!

FORBES: CEOs for the next century

Thirty-six hours had passed since the bodies were found Tuesday morning, but no one had come to claim them and they remained unidentified, Mancillas said.

CNN: STORY HIGHLIGHTS